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1. Figure 2 miopanEngineering derived from the template instrument standard xxopanEngineering 18 is also accessible by the Engineering option on the top bar of Fig 5 2 3 Command line Startup and Shutdown The aformentioned Startup Tool starts the servers in a form equivalent to the command line calls wmidi gt mioControl wmidi gt bossArchiver MIDI Higher log levels are available via command line options listed in mioControl 1 and in bossArchiver 1 or by changing the 0CS CON LOGLEVEL in mimcfgSTART cfg The activation of the bossArchiver might change according to VLTSW20040257 2 4 Monitoring Graphical User Interfaces Besides Fig 2 the miopan module offers the following MIDI specific graphical interfaces 2 4 1 Distributor The call wmidi gt miopan creates the GUI of Fig 3 Its main purpose is to provide a fast shortcut to other functionality through its OS menu button without need to remember the names of other interfaces by heart The two lowermost buttons provide means to look at the raw FITS 10 26 files produced by the instrument on the instrument workstation in the format specified in 5 Here raw means on an exposure by exposure basis with no inherent support of data analysis This is generally done by an intermediate representation 8 MIDI Observation Software Issue 1 5 235 VLT TRE MID 15824 0264 miopan te35 File Std Options OS Help Online Observation Preparation and Aft
2. 6 Corr 2 STARTX 186 DET WING STARTY 171 DET VIN6 NX 7 DET WIN6 NY 6 Corr 2 mioSetup_FIELD_OPEN_SCI_PHOT FullField fits DET WIN1 STARTX 167 DET WIN1 STARTY 10 DET WIN1 NX 42 DET WIN1 NY 40 Corr 1 DET WIN2 STARTX 167 DET WIN2 STARTY 60 DET WIN2 NX 42 DET WIN2 NY 40 Corr 2 DET WIN3 STARTX 167 DET WIN3 STARTY 146 DET WIN3 NX 42 DET VIN3 NY 40 Corr 2 DET WIN4 STARTX 167 DET WIN4 STARTY 200 DET WIN4 NZ 42 DET WIN4 NY 40 Corr 1 mioSetup_FIELD_OPEN_SCI_PHOT_T 0 110 fits DET WIN1 STARTX 184 DET WIN1 STARTY 18 DET WIN1 NX 9 DET WIN1 NY 6 Corr 1 DET WIN2 STARTX 184 DET WIN2 STARTY 27 DET WIN2 NX 9 DET WIN2 NY 6 Corr 1 Figure 4 This list of FITS template files is created if the Window Files button of the GUI in Fig 3 is pressed 10 MIDI Observation Software Issue 1 5 235 VLT TRE MID 15824 0264 po MIDIControl G File Options Engineering Instrument Disks ICS RID State LOADED Mode Undefined DRO wm NRTS ICS VLTI sate i conn Substat Access Simulation ROE SIM no simul Exposu re metinn Elapsed s i ORT Exp Time 0 0 s FITS fie DE Frame In inactive Ac active Un undefined Nu nulling lt alias gt ISS chop status Figure 5 miopanControl derived from the template instrument standard xxopanControl of 18 is explained in miopanControl 1 Autoclose 15 seconds data Total 3281897 Free 2290266 fdiska Total 4756974 Free 859435 disk a
3. From an alternative point of view this includes the mandatory commands of workstations STATUS STATE STANDBY ONLINE OFF and VERSION of 14 3 1 4 3 with the exception negative list of INIT SELFTEST SIMULAT STOPSIM STOP and VERBOSE and includes ABORT COMMENT CONT END PAUSE START and SETUP of 19 The commands may originate from BOB from the UNIX shell via msgSend 1 from panels via panSendCommand 3 from the sequencer shell 1 or from any other process booking into CCS Shortcuts to the STANDBY and ONLINE commands are provided by two buttons in the 0S column of Fig 2 and a shortcut to the ABORT command in Fig 5 It is generally advisable to use the CCS Engineering User Interface wmidi gt ccseiMsg amp documented in 39 2 18 4 to send commands to OS since the full and up to date Command Defini tion Table CDT will be listed in the Command selector of the GUI Select wmidi as the Environment and mioControl as the Process 2 5 2 Standards The OS server inherits a full set of standards of operation from the base class server 33 like e Forwarding STANDBY and ONLINE commands to the subsystems The exception is that state changing commands like these are not forwarded to the VLTT Sending STANDBY to the sub systems when starting or exiting and comes as a surprise for novices This may be seen as providing master control and implementing state alignment e Automated creation of
4. Manual 6 edition 20 December 2004 VLT MAN ESO 19200 1644 10 W D Cotton D Tody and W D Pence Binary Table Extensions to FITS 1995 11 J de Jong MIDI Near Real Time Software User and Maintenance Manual 8 February 2004 VLT TRE MID 15824 0270 12 DICB Data Interface Control Document 1 February 2005 GEN SPE ESO 19400 0794 13 Alberto Gennai Interface Control Document between VLTI Fast Link and Delay Line OPD Controller FSU VINCI 15 March 2002 VLT ICD ESO 15400 1954 14 B Gustafsson and B Gilli Guidelines for the Development of VLT Application Software 29 June 2005 VLT MAN ESO 17210 0667 15 S Hippler MIDI Computer System Architecture 30 January 2001 VLT TRE MID 15823 0127 MIDI Observation Software Issue 1 5 235 VLT TRE MID 15824 0264 39 16 17 18 19 20 21 22 23 24 25 26 27 28 29 31 32 33 34 N Housen Simulation of VLTICS for Instrumentation SW User Manual 1 December 2001 VLT MAN ESO 15410 2372 W Jaffe Overview of MIDI Software Systems 31 January 2001 VLT TRE MID 15824 0130 A Longinotti VLT Software Template Instrument User and Maintenance Manual 31 March 2003 VLT MAN ESO 17240 1973 A Longinotti VLT Software INS Common Software Specification 30 January 2004 VLT SPE ESO 17240 0385 A Longinotti VET Software VLT Instrumentation Software Specification 30 September 2005 VLT SPE ESO 17212 0001 Richard J Mathar MIDI
5. Wallander VLTI Supervisor Software ISS Design Description 20 July 2005 VLT SPE ESO 15410 2114 A Wallander ICD between VLTI Supervisor SW and VLTI Instrumentation SW 17 November 2006 VLT ICD ESO 15410 2117 R Wilhelm B Koehler and Ph Gitton Functional Description of the VLTI 2 August 2002 VLT ICD ESO 15000 1918 The radii of curvature of M2 M5 and M7 in Table 4 1 are wrong See 37 for M2 000
6. either through DET EXP NO which stays the same for all files of an exposure or through monitoring of TPL EXPNO and OCS EXPO FILENO or somewhat tedious using the FRAME column in the IMAGING_DATA table which continuously is increased until the entire exposure is completed Internally a sequential file naming scheme is used these file names are presumably the values of the ORIGFILE keys in the archive files A file of the pattern _01 fits is the first file of an exposure possibly followed by a file with the same base name ending on _02 fits and so on and finally a dummy file ending on _99 fits The current description in http www eso org observing dfo quality MIDI basics html is wrong This dummy file was introduced to allow explicit signalling of the BOB template termination in the case of multiple files per exposure It contains only a primary header and no detector data which ensures that it does not need to be split due to size To accomodate this case the observation software increases TPL NEXP on receipt from the BOB server before this keyword is forwarded to the subsystems and finally ends up in the primary headers The script mioFitsFNames 1 can be used to create symbolic links to the ESO archive file names in the current working directory 1 5 3 Templates with Many Exposures An index list of file names sorted according to all exposures that result from a template run is kept in the primary header keywords OC
7. merger scripts for the archiver in conjunction of synchronized requests to the ICS and ISS subsystems to generate binary FITS tables In all cases of interaction with the telescope s the MIDI OS has replaced the TCS subsystem by the VLTI ISS subsystem as embodied by the bossVLTI module wherever applicable The at parameter of the START command is effectively ignored and the actual exposure start time in the schedules 1 4 is put about ten seconds into the future from the time when mioControl receives the START command If mirror chopping is active at that time the start of the first frame integration is aligned to the begin of a chopping half cycle on the target otherwise it is simply set to start at a straight second 16 MIDI Observation Software Issue 1 5 235 VLT TRE MID 15824 0264 2 5 3 Example The probably fastest testing BOB independent way of running an exposure that generates an output file is to stay with any defaults already used by the subsystems i e to use a minimum set of SETUP commands necessary to request select an exposure ID to trigger generation of an output file in the ARCDATA directory wmidi gt msgSend mioControl online wmidi gt msgSend mioControl clean wmidi gt msgSend mioControl setup expold O function INS MODE AUTOTEST wmidi gt msgSend mioControl start expold 1 wmidi gt msgSend mioControl wait expold 1 See also the shell script mio test m
8. of magnitude to avoid over estimation of the requested space The estimated disk requirement is roughly proportional to this value Decide whether a backup disk exists with sufficient capacity to swallow some of the detector data files or whether detector data files must be removed from the IWS disk in case of which one relies on OLAC as the backup system Calculate a list of older data files and re move them wmidi gt cd INS_ROOT SYSTEM DETDATA wmidi gt export ti 1s 1 MIDI fits wc 1 wmidi gt export t2 dc 1 lt lt wmidi gt t1 3 f wmidi gt wmidi gt export ti 1s r MIDI fits tail t2 followed by either wmidi gt mv t1 diskc 04 midi if this backup directory exists under diskc for example or by wmidi gt rm t1 if the files are to be deleted This procedure might be repeated during a night 2 7 11 No Data Files on wvgoff Symptom The MIDI FITS files that are available on wmidi INS_ROOT SYSTEM DETDATA are not forwarded to the offline machine wvgoff data raw Cause 1 The corresponding disk on wvgoff is full as confirmed with wvgoff gt df k data raw Workaround Remove superfluous files on the disk and try to restart the process that subscribes to the online archive 35 wvgoff gt dhsSubscribe Cause 2 The process bossServer is not running on wmidi which means that files with suffixes like hdr det btbl fits and arf are accumulating in wmidi INS_ROOT SYSTEM D
9. only aspects that might be noteworthy or peculiar from the outside New versions of this manual are distributed e through the CMM module VLT TRE MID 15824 0264 e through the web page of the OS maintainer http www strw leidenuniv nl mathar public 1 2 Environment The OS is running on the Instrument Workstation wmidi an HP equipped with CCSlite integrated into the MIDI instrument LAN 15 41 It hosts the UNIX processes mioControl the OS server which handles commands from BOB ccseiMsg etc forwards commands to subsystems and coordinates replies and gathers portions of FITS files and bossArchiver which merges FITS files according to scripts created by the main server and announces to the online archive client when these are complete 1 3 Sequentialization The only mode of operation currently supported by the OS server is a strictly sequential operation defined as a loop over exposures which are roughly defined by i receiving a series of SETUP commands readily distributed forwarded to the subsystems DCS ICS VLTI followed by ii 2 MIDI Observation Software Issue 1 5 235 VLT TRE MID 15824 0264 CCS world ES N non CCS world Figure 1 The relationship between MIDI program packages The bold arrow indicates the main flow of detector data Command exchanges follow the small arrows Note that this diagram does not describe a map relationship configuration hardware gt software receiving START and
10. the files wmidi PKGIN BUILD miins config miinsINSTALL cfg and wminrts PKGIN_BUILD minrts config minrtsINSTALL cfg A 3 line entry of the format INSTALL MODULEi NAME miopub INSTALL MODULEi NAME mio INSTALL MODULEi NAME miopan in the pkgin configuration file suffices for compilation Without use of pkginBuild this is equivalent to wmidi gt cd PKGIN_BUILD miopub src wmidi gt make clean all man install wmidi gt cd PKGIN_BUILD mio src wmidi gt make clean all man install wmidi gt cd PKGIN_BUILD miopan src wmidi gt make clean all man install The midi netrc file is needed by mioSetupDistr 1 and mioFtp2Ews 1 As it contains verbatim passwords it is not stored in CMM but must be edited manually The contents is machine wminrts login midi passwd machine wmidc login midi passwd The second line is not needed if DCS is run in the newer single machine configuration 28 3 1 2 Preprocessor Workstation The equivalent standard installation of the NRTS software on the PP WS 25 ensures that static configuration files for schedules and for FIT S templates are consistent The current version of the Makefile compiles only a small part of the module on the PP WS minrts and leaves most of it out using a switch that senses the type of operating system SunOs This reduces compilation times on the PP WS 3 2 CMM modules 3 2 1 mio The directory mio contains the core part of the master server mioControl in fo
11. the set in the DET FITSTPL selector of Fig 15 The option midcs of mioFitsCnvrt 1 may be used to generate others in case of need one may derive new files from existing ones with fv 1 and there may exist IDL routines but not as part of the OS and therefore not described here with equivalent functionality mioFits2Win 1 with the option c ought be used to check the internal consistency of various pieces in these FITS files The tests executed on the files are described in the description of the function check in the man page mioCcfits 4 Some of them are necessary because the standard 5 demands redundancy of information often including header keywords that are implicit defined through the tables layout which may cause discrepancies others of them are necessary to avoid that GEIRS produces data streams 38 which are not expected by NRTS which again is out of the scope of this manual Anyway the new files should added to the mio mio config directory of the mio module and dis tributed by shutting down OS and executing make all install in mio mio src Here is an explicit remark concerning rumours that one would have to copy the mioSetup fits files to wminrts explicitly The OS server mioControl tries to copy these to wminrts with mioSetupDistr 1 as mioControl is started as a measure against problems that may occur at that time insufficient file access permissions e g DCS may do this in addition see 28 This install
12. with scanei 1 that wminrts is scanned Note that starting the DCS system on wmidi with miinsStart activates the scanning whereas manual start of NRTS on wminrts with minrtsStart does not Recovery Restart OS as usual either by wmidi gt miinsStart proc OS restart or pressing the SHUTDOWN then STARTUP button in Fig 2 2 7 3 Persistent OS state off Symptom 1 OS does not reach the online idle state at startup Cause One or more of the subsystems configured as available do not go online State alignment between OS and the subsystems means that the OS server takes the instrument state as the lowest common multiple of the subsystem states Workaround Use miopanControl Fig 5 to figure out which of the subsystems planned to have normal access did not move up to a sufficiently high state Notice that the state of the OS server and the aligned instrument state are two different things MIDI Observation Software Issue 1 5 235 VLT TRE MID 15824 0264 21 Symptom 2 The UNIX process mioControl does not start but produces permission denied errors in vltdata tmp logFile Cause The attempt to copy mioSetup fits files with mioSetupDistr 1 from wmidi over to wminrts see Sec 3 6 1 failed due to insufficient file write permissions for the midi account on wminrts INS_ROOT SYSTEM MISC Workaround Login as midimgr on wminrts and use wminrts gt chmod g w INS_ROOT SYSTEM MISC mioSetup fits On the long term ensure tha
13. 0 1076 for the entire duration of the schedule Do not forget the exponent units are meter The Ascii dump of Fig 14 may help to debug e Check that the environment wminrts and the main server minrtsControl are still alive vccEnvCheck 1 miopanControl 1 22 MIDI Observation Software Issue 1 5 235 VLT TRE MID 15824 0264 2 7 5 Complaint on missing HEADER file Symptom The OS server mioControl does not start but issues errors like Could not locate file HEADER according to environment variable Cause Reference files specified in mimcfgINS cfg with the keywords OCS MODEi SETUP are missing in INS_ROOT SYSTEM COMMON SETUPFILES REF due to incomplete installation of mioseq Workaround Login as midimgr on wmidi and call make all man install in PKGIN_BUILD miotsf src and then in PKGIN_BUILD mioseq src to recreate them 2 7 6 Logline of undeclared file name Symptom The logFile contains lines of the format Filename is not declared for exposure on det DCS Cause This is a log line created by the BOSS base class which is inherited by the mioServer after START Workaround This may be ignored since the MIDI file names are declared later when the schedules have been created and when the time stamps of the first exposure are available to become part of the file names 2 7 7 Logline of subsystem being not on the list Symptom The logFile contains lines of the format WARNING Setting subsys
14. 3 2 3 miopan Contains the i tcl codes to create Figs 2 8 and the java code to create Fig 15 3 3 Configuration The configuration through the files mimcfgINS cfg and mimcfgSTART cfg contained in the CMM module mimcfg is described in 33 The subsystems shown in Fig 1 are represented by one server each Subsystem Category standard server alternative simulating servers ICS OCS INS1 miiControl wmidi DCS OCS DET1 midControl wmidi VLTI OCS TEL issifControl wvgvlti issifControl wmiVlti From the point of view of OS there is only one detector subsystem This is automatically achieved by installing a single DCS representative in mioSERVER SubsystemInterfaces The OCS DET 23 keywords are usually ignored hence OCS DET NUM could be set to 1 The Startup Tool miinsStoo 3 31 and the split server midControl however use OCS DET2 to configure DCS DRO and OCS DET3 to configure DCS NRTS 28 Therefore at the time of this writing OCS DET NUM must be kept at 3 If the ISS VLTI is not used specifically if e light sources represented by ISS telescopes siderostats ARAL are not used but only sources internal to MIDI the CO laser the black screen e no communication with the VLTI server or its simulating counterpart is necessary the OCS TEL AVAILABLE keyword could be set to IGNORE which means that e ISS VLTI related FITS tables are not generated 28 MIDI Observation Software I
15. 4 4 666444 bo ee daa a ee es 20 2 7 1 Frozen VLII Substate ss cc sess sssaaa ae daas de ee a 20 2 7 2 Persistent OS substate Observing saoao eee eee 20 2 1 3 Persistent OS state Of pscs moa aoa a a Re A a 20 2 7 4 Cannot complete User defined function map e niu pa E e ee a 21 2 7 5 Complaint on missing HEADER file scs acet pa iis Be e a A ee a 22 27 6 Logline of undeclared ile DAME sos 22 42 moea p E a e Oe a 22 2 7 7 Logline of subsystem being not on the list o a 22 2 7 8 Stopped Graphical User Interfaces ooo a 22 2 7 9 Strange and unrealistic temperature and pressure recordings 23 2 7 10 Detector Data Disk Full 2 0 2 0 ee ee ee 23 2 01 No Data Files o wygoff ss beep Fe ee a eR ee Sw Es 24 MAINTENANCE MANUAL 26 Ou Installation 200 Kaw 4 o u be ee E A ee eS 26 3 1 1 Instrument Workstation sos e nos e s ace ata dos woa woi p ee ee 26 3 1 2 Preprocessor Workstation 2 2 22 5 248 cmoa uoa AR a e 26 3 2 GMM modules 22424428553 02 e eee be Re ee ee ee es 26 See AMO as wham eos ba kh ew a de we He O a ae Be a ee 26 S22 IMIOPUb sig ira he oe RB dee ws be ects oh BOR Ae amp By ae Bede gcd ees 27 D200 MIOPAL sa me ets a HAE Ho MOH GC REP aa 27 3 39 COMMPIPATION marxa ee ER eR ee Re ee RAG Oe 27 3 4 Piezo motion and exposure schedules 1 0 0 00 ee ee 28 3 5 Chopping synchronization c Sa gacet ae ee ae ee EE a ee es 30 3 6 FITS files 2 483564 6 220484 8204 ib ba a a bee P
16. CI_PHOT mioSetup_SPECTRAL_GRISM_HIGH GRISM_HIGH miosetup_SPECTRAL_PRISM_HIGH SENS_SLIT_0 2 fits SENS_T_0 1ic fits SCI_PHOT_SLIT_0 2 fits 5CI_PHOT_T_0 11c fits SENS T_0 Iic fits SCI_PHOT_SLIT_0 2 fits SCI_PHOT_T_0 iic fits Figure 7 This auxiliary window shows the Instrument Summary File ISF It is obtained by pressing the Help button in the header bar of Fig 5 selecting the ISF display option and chosing the file MIDI isf 12 MIDI Observation Software Issue 1 5 235 VLT TRE MID 15824 0264 File Std Options ICS Help ICS Motors DCS NRTS a Acquisition frame rates D q 100 0 Merging 100 Archiving MIDX 2003 10 23T17 18 59 576_02 PA E a lamp1 ICS Sensors Pressure 9999 Pa K Filter 9999 Detector 9999 kK Figure 8 miopanStatus see miopanStatus 1 2 4 3 MIDI Status Fig 8 is called by wmidi gt miopanStatus or wmidi gt miinsStart panel OS_STATUS 2 5 Server Command Interface 2 5 1 Access The command definition table implements the standard list of commands inherited from the un derlying BOSS server 33 MIDI Observation Software Issue 1 5 235 VLT TRE MID 15824 0264 Autoclose 15 seconds LAMP2 Heatbl Black Screen OUT LAMP1 10 mu CO2 laser ab SAUT SLIT OPT1 GRIS CAM SELL Cold Stop Shutter ABOPEN Spatial Filters OPEN Beam Combiner SCI_PHOT grisms prism flat SWSIM Camera
17. Detector WarmUp Panel N2 Vessel Heater Panel Cold Bench Heater Panel Repressurization Panel MotorMetrol LCU fan LiquidNitrog hose connctd Detector Temperat Intlck Cold Bench Temperat Intlck N2 Vessel Temperat Intlck Electronic Cab 2 Front Door Electronic Cab 2 Rear Door Electronic Cab 3 Front Door Electronic Cab 3 Rear Door CLOSED CLOSED OK OK NONACC RUN OK OK FREE FREE OFF OFF ON ON ON OFF OK CONNECTED LOCKED FREE LOCKED OPEN CLOSED CLOSED CLOSED Figure 11 8 and selecting the Interlocks option This auxiliary window is obtained by pressing the ICS button in the header bar of Fig MIDI Observation Software Issue 1 5 235 VLT TRE MID 15824 0264 15 e plus a large subset of commands known to the issifControl process 43 Making use of the for warding capabilities configured through the 0OCS TEL KEYWFILT keywords of mimcfgINS cfg the latter means that NRTS may steer the telescopes by sending issifControl commands to mioControl BOB may send all issifControl commands to mioControl this is not simple however since the name of the control process is hardcoded in the private data section in the isstclISS tcl source code of the isstcl module at the time of this writing e minus the pair of commands PAUSE and CONT that do not make sense for the instrument as no means for synchronzied suspension of the data flow are implemented in the servers shown in Fig 1
18. E a ee es 31 3 6 1 Template fil s o s cee eek se paea doa ade a a 31 3 6 2 Inspecting Data tiles seiss a i ere ee e ak a e A 31 3 0 3 IPOSHprOCESSIM ss se aka A A A a 31 3 7 Troubleshooting and FAQ noaa aaa ee 32 3 7 1 boss logs non existing OLDB attributes 2 32 3 7 2 The archived FITS files don t contain the header keywords inserted by DCS 32 3 70 3 Slow FITS Archival 4 244404 444545484 bee SHG ee Oe oa eee 33 3 7 4 Identical Copies of TIME values in IMAGING_DATA tables 33 3 00 WTEC and MIJIDAOBS differe saiad ate Boch oh ahd wie ck Gt gn Ste eho ee Bd ees 33 lv MIDI Observation Software Issue 1 5 235 VLT TRE MID 15824 0264 4 BEYOND THE OBSERVATION SOFTWARE 34 4 1 Observation Support Software e 34 412 FAQ and Troubleshooting a vie ace ee dl la ek e e Ra eti 34 4 2 1 Syntax errors with negative motor positions in BOB 34 4 2 2 Negative Integration Delay Time o e 00008 34 4 2 3 Varying MJD OBS in a single FITS file o o 34 4 2 4 Cannot start vltisim from the Simulation Control Panel 36 42 5 FITS compatibility s 220 5 24 Bu a a He Ee a ee 36 5 APPENDIX 37 Bel Acronyms Lido el Bice Be ie de A a Se ee Pa Oe ee RA i 37 Bd Referenc s 86 84 ew a A e RO AN ee de De we OW a a 38 List of Figures 1 10 11 12 13 14 15 The relationship between MIDI program packages The bold arrow
19. ETDATA Also the command wmidi gt msgSend bossArchiver_mio PING says that it cannot get information on the process and for each FITS file generated an error window with the same message pops up unless the shell variable NOLERR_DISPLAY has been set Recovery Restart the OS witha wmidi gt miinsStop proc OS wmidi gt miinsStart proc OS MIDI Observation Software Issue 1 5 235 VLT TRE MID 15824 0264 25 pair or even simpler restart only the archiver with wmidi gt msgSend bossArchiver_mio EXIT wmidi gt bossArchiver MIDI If this does not work start mioFtp2Ews 1 to build another mean of forwarding the data from wmidi to wvgoff but note that these do not trigger the online pipeline handling standard archival mioArchiv 1 is an auxiliary program to merge the FITS pieces that have been left over in wmidi INS_ROOT SYSTE in this case 26 MIDI Observation Software Issue 1 5 235 VLT TRE MID 15824 0264 3 MAINTENANCE MANUAL The names of the Observation Software modules in ESO s Configuration Management Module are mio miopan miopub mioseq and miotsf The contents of the first three of these is covered here whereas mioseq and miotsf are described elsewhere 25 4 3 1 Installation 3 1 1 Instrument Workstation The standard installation of the OS ICS and the DRO part of the DCS software on the IWS uses one of various options of pkginBuild 36 to retrieve and compile the source codes as layed out in
20. GING DATA table and the LOC_OPL colum in the SCAN_SETUP tables refer to the rest positions of the piezos of both beams as 0 meter MIDI beam A is the western one fed from the more nothern beam in the Interferometric Lab beam 2 according to Fig 1 of 43 and the one closer to the VINCI table in Fig 3 5 of 44 MIDI beam B is the eastern one fed from the more southern beam in the Interferometric Lab beam 1 according to 43 and closer to the Beam Compressors in Fig 3 5 of 44 Starting from these voltages applied to the piezos can only reduce the optical path differences between the star and the detector therefore the local positions are negative in general The sign convention of the Delay Line Translation Stage DLMT that carries piezo A represented by the INS DLMT keyword is equivalent The optical path difference caused by the MIDI warm optics following the VLTI sign convention 34 3 2 6 4 is piezo B piezo A DLMT The value of piezo A is found in LOCALOPD 1 the value of piezo B in LOCALOPD 2 Motions of MIDI s cold M1 mirror act on both beams and therefore ought cancel when calculating the path difference The OPD column in the IMAGING_DATA table reflects the motion of the VLTI delay lines relative to the blind trajectory of the VLTI geometrical model as commanded through the reflective memory network 40 13 via the MIDI LCU 1Imiicsi and directed by NRTS commands It does not contain measured positions which cou
21. Instrument Control Software 1 February 2001 VLT TRE MID 15823 0128 Richard J Mathar The unknown target type flag percentage as a function of chopping frequency Technical report 3 June 2003 Richard J Mathar MIDI optical path differences and phases Technical report 10 March 2006 Richard J Mathar PRIMA Non Astrometric Modes External Fringe Tracking for MIDI 29 May 2006 UL ICD DDL 15728 0009 Richard J Mathar and Walter J Jaffe Software User s Guide and Overview 21 September 2004 VLT TRE MID 15824 0262 NASA Scienc Office of Standards and Technology Definition of the Flexible Image Transport System FITS 29 March 1999 NOST 100 2 0 Udo Neumann MIDI Instrument Control Software User and Maintenance Manual 16 June 2004 VLT TRE MID 15823 0266 Udo Neumann and Clemens Storz MIDI Detector Control Software User and Maintenance Manual 20 October 2005 VLT TRE MID 15823 0268 Thomas A Pauls John S Young William D Cotton and John D Monnier A data exchange standard for optical visible IR interferometry In Wesley A Traub editor New Frontiers in Stellar Interferometry volume 5491 of Proc SPIE pages 1231 1239 Int Soc Optical Engineer ing 2004 Thomas A Pauls John S Young William D Cotton and John D Monnier A data exchange standard for optical visible IR interferometry Publ Astron Soc Pac 117 837 1255 1262 2005 D Popovic VET Software INS Common Software Startup Tool User
22. JD OBS and or OBS DATE if accurate estimation of the start of the exposure is needed 34 MIDI Observation Software Issue 1 5 235 VLT TRE MID 15824 0264 4 BEYOND THE OBSERVATION SOFTWARE This section deals with aspects of the MIDI operation which are not due to OS but apparently not covered anywhere else 4 1 Observation Support Software miopanETC 1 is the GUI shown in Fig 15 which i converts three common time formats in the uppermost part ii computes detector cycle times based on DET keywords and the number of detector lines specified implicitly through the FITS template files and iii converts time formats associated with some chopping keywords optionally bound to the detector cycle time 4 2 FAQ and Troubleshooting 4 2 1 Syntax errors with negative motor positions in BOB Symptom Typing numbers like 00013 for motor positions in BOB leads to errors of the message system though the number is perfectly in the valid range Cause Negative numbers with no digit between the sign and the decimal dot i e in the FORTRAN style are misinterpreted as option flags by the CCS message parser A proposal to improve the parser has been rejected by ESO in VLTSW20020405 Workaround Type in negative floating point parameters with an explicit decimal that would be 0 00013 in the example above 4 2 2 Negative Integration Delay Time Symptom The keyword DET DITDELAY in the primary FITS header which ought be a positive time measured i
23. Manual 26 August 2005 VLT MAN ESO 17240 2153 D Popovic VET Software INS Common Software Data Transfer Library User Manual 9 Febru ary 2007 VLT MAN ESO 17240 0637 E Pozna VLT Software Base Observation Software Stub BOSS User Manual 7 February 2007 VLT MAN ESO 17240 2265 F Puech and Ph Gitton Interface Control Document between VLTI and its Instruments 11 August 2005 VLT ICD ESO 15000 1826 On page 110 f7 should read fo f lt f should read f lt fe and 1 38 107 should read 1 38 x 107 40 35 36 37 38 39 40 41 42 43 44 MIDI Observation Software Issue 1 5 235 VLT TRE MID 15824 0264 SEG Data Flow System High Level User s Guide 20 March 2002 VLT SPE ESO 19000 1780 S Skole and R Schmutzer VLT Software Installation Tool for VLT SW Packages User and Maintenance Manual 31 December 2005 VLT MAN ESO 17240 1913 S Stanghellini and A Michel Performance of the first two beryllium secondary mirrors of the VLT The Messenger 94 10 11 1998 C Storz and J A de Jong ICD Data Transfer from DRO to NRTS 15 May 2001 VLT ICD MID 15824 0143 CCS Team VLT Software Central Control Software User Manual 31 March 2004 VLT MAN ESO 17210 0619 M Verola and N Wolff Interface Control Document between VLTI Control System and Delay Line 11 December 1997 VLT ICD ESO 15400 1542 A Wallander Final Lay out of VLTI Control LANs 28 May 2004 VLT SPE ESO 15410 1957 A
24. S EXPOi FNAME 4 MIDI Observation Software Issue 1 5 235 VLT TRE MID 15824 0264 An estimate of the total number of files created by a template sequencer file is calculated in the sequencer file by multiple calls of mioFits2Win 1 and forwarded by an appropriate SETUP com mand with the keyword 0OCS TPL NFILE to the OS server The OS server creates in addition the keywords OCS TPL FILENO in the primary headers to enumerate all data files created on behalf of the current template Example of header keywords of a case where the template contains 2 exposures the first creating 1 file the second creating 2 files and the sequencer file using TPL NEXP 2 and OCS TPL NFILE 4 in SETUP commands 1st file HIERARCH ESO OCS EXPO FILENO 1 HIERARCH ESO OCS TPL NFILE 4 HIERARCH ESO OCS TPL FILENO 1 HIERARCH ESO TPL NEXP 3 HIERARCH ESO TPL EXPNO 1 2nd file HIERARCH ESO OCS EXPO FILENO 1 HIERARCH ESO OCS TPL NFILE 4 HIERARCH ESO OCS TPL FILENO 2 HIERARCH ESO TPL NEXP 3 HIERARCH ESO TPL EXPNO 2 3rd file HIERARCH ESO OCS EXPO FILENO 2 HIERARCH ESO OCS TPL NFILE 4 HIERARCH ESO OCS TPL FILENO 3 HIERARCH ESO TPL NEXP 3 HIERARCH ESO TPL EXPNO 2 4th file HIERARCH ESO OCS EXPO FILENO 1 HIERARCH ESO OCS TPL NFILE 4 HIERARCH ESO OCS TPL FILENO 4 HIERARCH ESO TPL NEXP 3 HIERARCH ESO TPL EXPNO 3 This is the dummy file with no detector data Depending on the outcome of VLTSW20030219 and VLTSW20030535 this ch
25. The Mid Infrared Interferometric Instrument for the Very Large Telescope Interferometer MIDI Observation Software User and Maintenance Manual Doc No VLT TRE MID 15824 0264 Issue 1 5 235 Date August 23 2007 Li El Prepared A r E A O eaa iu Name Date Signature Approved o dies Name Date Signature Released ia an eee ar ave bn ba Sodaw bat abn Name Date Signature ii MIDI Observation Software Issue 1 5 235 VLT TRE MID 15824 0264 Change Record Issue Date Section Parag affected Reason Initiation Documents Remarks 0 1 05 Mar 2002 all created 1 3 21 May 2004 1 1 updated URL s 21 May 2004 Figs 12 13 added 23 Jun 2004 3 2 2 cftisio no longer in miopub westools 3 5 3 24 Jun 2004 2 7 2 added paragraph Recovery 16 Jul 2004 2 7 3 added description of Symptom 3 3 7 removed obsolete section on boss FATAL ERROR 3 5 added 22 Jul 2004 3 7 2 added 27 Jul 2004 3 7 3 3 7 4 added 17 Sep 2004 Fig 15 Sec 2 3 man pages updated 1 4 26 Sep 2004 1 5 removed mio pan FitsByTpl 05 Oct 2004 3 2 2 removed a2ps 4 removed miopanLogSheet 3 6 1 removed miopanSetup 10 Nov 2004 all removed 120 pages of explicit man page listings 17 Nov 2004 2 7 11 extended after PPRS 00014396 1 4 236 23 Aug 2006 all transition to PDF Dz updated extended sorted alphabetically 4 2 5 added 2 111 corrected typo bosArchiver 1 5 235 23 Aug 2007 3 7 5 added 5 1 extended Co
26. Total qari aia Free 4213262 fdisk b Total oa Free ia disk c Total Vaal Saal Free 423082 fdisk d Total else Free 1014539 fdisk a Total Teel ays Free 4636712 f disk b Total 7521534 Free 3519501 fdisk e Total 7521534 Free 1389763 f disk d Total 15052727 Free 15052687 Figure 6 This auxiliary window is obtained by pressing the Disks button in the header bar of Fig 5 It is based on mioIstDiskInfo 1 MIDI Observation Software Issue 1 5 235 VLT TRE MID 15824 0264 MIDIZINS_ ROOT SYST EM COMMOI CONFIGEI high Detector gain DETPREAMP GAIN halt fuli Detector gain DETWINX 3200 DETWINY m4 240 DETWINTYPE AUTO ow Windowing type for DET WINTYPE DETFITSTPL miosetupl fits miosetup_FIELD_OPEN_HIGH_SENS_Fullrield fits miosetup_FIELD miosetup_FIELD_OPEMN miosetup_0PEM fits mioSetup_SPECTRAL mioSetup_SPECTRAL_GRISM miosetup_SPECTRAL_GRISM miosetup_SPECTRAL_PRISM_HIGH_SENS_SLIT_0 2 fits mioSetup_SPECTRAL_PRISM mioSetup_SPECTRAL_PRISM DETHRTSDISPL AVERAGE DETHRTSHDISP Lil ble OPEN_HIGH_SENS_T_0 11c fits OPEN_FullField fits miosSetup_FIELD_OPEN_OPEN_T_0 11C fits mioSetup_FIELD_OPEN_SCI_PHOT_FullField fits miosSetup_FIELD_OPEN_5CI_PHOT_T_0 11c fits miosetup_FIELD_PRISM_HIGH_SENS_SLIT_0 2 fits mioSetup_FIELD_PRISM_HIGH_SENS_SLIT_0O 2_Lown fits miosSetup_PUPIL_OPEN_HIGH_SENS_OPEM fits mioSetup_PUPIL_OPEH_OPEN_OPEN fits mioSetup_PUPIL_OPEH_S
27. WAIT also forwarded and iii finished by DCS signalling completion which triggers iv completion by an archiver process Note that this serialization means enforces that no SETUPs are accepted while any exposure is running but allows and supports parallelization within the SETUP phase since it distributes the SETUP command to the subsystems DCS ICS VLTI in parallel 1 4 Time Control Prior to the actual start of the exposures OS generates a schedule that combines the information on requested integration times requested motion of the internal delay lines scans This is a rather strong control compared to operation of the underlying standard server where usually the requirements and bandwidth of the DCS alone would set the pace of the data output after the START i e once the optics is set up MIDI Observation Software Issue 1 5 235 VLT TRE MID 15824 0264 3 1 5 Data Output 1 5 1 VLTI FITS Format The data files prepared for VOLAC follow the FITS table standard of 5 Note that some tables and hierarchical keywords of the ISS class are not managed by OS but inherited from ISS their interpretation is therefore out of scope of this document here and discussed elsewhere 23 The format of the TARTYPj column in the IMAGING DATA table is 2A not 1A as in 5 to ensure more predictable alignment of the 16bit data on the DWS and therefore support faster data copy modes Supposed that the detector readout is completely uncorrela
28. ange On Line Archive Client Online data base Observation Software Phase 2 Proposal Preparation http www eso org observing p2pp 38 MIDI Observation Software Issue 1 5 235 VLT TRE MID 15824 0264 ROE Readout Electronics TCS Telescope Control System VLT Very Large Telescope http www eso org VLTCS VLT Control Software VLTI Very Large Telescope Interferometer http www eso org vlti VOLAC VCS OLAC 5 2 References References 1 E Allaert VLT Software HOS Sequencer User Manual 28 March 2002 VLT MAN ESO 17220 0737 2 E Allaert VLT Software HOS Broker for Observation Blocks User Manual 24 April 2007 VLT MAN ESO 17220 1332 3 E Allaert and A M Chavan ICD between the VLT Control Software and the Observation Handling Subsystem 30 May 2003 VLT ICD ESO 17240 19200 4 E J Bakker MIDI observing procedures user and maintenance manual 26 July 2002 VLT TRE MID 15824 0263 5 P Ballester and C Sabet VLT Interferometer VLTI Data Interface Control Document 3 June 2002 VLT SPE ESO 15000 2764 6 M Bec VET Software Broker for Observation Blocks Software Maintenance Manual 28 August 1997 VLT MAN ESO 17220 1349 7 A Brighton VLT Software Real Time Display User Manual 16 May 1999 VLT MAN ESO 17240 0866 8 F Carbognani VLT Software Environments Common Configuration User Manual 30 October 1998 VLT MAN ESO 17200 0855 9 F Comer n and D Silva Phase 2 Proposal Preparation Tool P2PP User
29. arameters presumably sent from the template scripts to ISS and or the detector integration time pre sumably sent from the template scripts via OS to DCS However it supports early assessment of the predicted detector cycle time with mioCycTime 1 improving on the precision of the knowledge of the ROE cycle time as a function of DET INT DET COADD DET FITSTPL etc is irrelevant to OS because this would only end up in a more accurate schedule and this is irrelevant to the LCU lmiics1 because this steps forward through the schedule as triggered by the ROE not according to cycle times in the schedule The implementation is in the StartPreProcSpecial function of the mioSERVER class The de scription here refers to the implementation as is it does not indicate that one could not think of scenarious where the observation software itself adjusts the chopping frequency by actively sending commands to ISS or supports the template scripts by leaving statistical information about the most recent exposure of the past in some OLDB attributes MIDI Observation Software Issue 1 5 235 VLT TRE MID 15824 0264 31 3 6 FITS files 3 6 1 Template files The man page mioSetup fits 5 describes how the up to date list of available file names is obtained This set ought be the same e as listed under the DETFITSTPL keyword in the ISF e the file MIDI isf in miotsf config also shown in Fig 7 e displayed with the method described for Fig 4 e and
30. ation does not include automatic recognition by BOB or P2PP 9 3 the list in the Instrument Summary File must be adapted manually nor does it prevent NRTS from actually using other files see 11 for details 3 6 2 Inspecting Data files Inspection of the FITS data files is supported by mioFitsListhead 1 mioFitsListstruc 1 mioFitsTablist 1 mioFits2Win 1 and rtd 1 mioFitsCnvrt 1 offers conversion routines and these are the basis of the display options of mioRtd 1 The additional software in mimtoo is superfluous Some of this functionality is bound to buttons in miopan 1 Fig 3 mioCfg2Fits 1 is called at run time by the OS server to convert the ICS motor configuration into the binary tables INS_DESCRIPTION and INS_TRAIN 3 6 3 Postprocessing After receipt of the FITS data files from NRTS the binary tables are postprocessed some or all of the tables INS_DESCRIPTION INS_TRAIN ARRAY_DESCRIPTION ARRAY_GEOMETRY OPTICAL_TRAIN 32 MIDI Observation Software Issue 1 5 235 VLT TRE MID 15824 0264 SCAN_SETUPi are added and the primary header is constructed from scratch based on queries to ICS DCS and ISS in conformance with the MIDI dictionaries Some information may be missing depending on the configuration of the subsystems with the various OCS keywords 33 Postprocessing includes the following modifications of the IMAGING_DATA and IMAGING DETECTOR tables e The GAIN column in IMAGING_DETECTOR is calculat
31. ed e Header keywords ESO DET DIDand ESO DET ID are inserted in the IMAGING_DATA and IMAGING_DETECTOR tables e The keywords DATE OBS and MJD OBS are transferred from the IMAGING_DATA to the IMAGING DETECTOR table e The DETECTOR column in IMAGING_DETECTOR is set to 1 Some of these action on the FITS files can be switched on or off by modification of preprocessor symbols in C header files The main reason of disabling this editing the FITS files received by NRTS is that this saves one time consuming complete reading of the large FITS files Experience on Paranal showed that the operators are generally more interested in getting quickly back to the next exposure than generating FITS files that please the Garching DMD community In this sense all this polishing of the DCS files is disabled at the moment 3 7 Troubleshooting and FAQ 3 7 1 boss logs non existing OLDB attributes Symptom The OS server creates log entries of the form Jun 17 12 07 40 te35 syslog 2003 06 17 12 07 40 999255 wte35 boss mioControl 214 O For DCS the dbROOT is set to default lt alias gt MIDI DCS DCS in VLT_LOG_FILES logFile which refer to attributes that do not exist in the IWS CCS database Cause The OS server base class in the boss module initializes a local variable in boss INTERFACE SetDefaultDbRoot at this time Workaround This log is irrelevant because the configuration keywords of the OCS DET1 category will supersede this initializat
32. er Treatment mioSchedu FITS snapshot tect Data Transf FITS merge FITS offline handling Table gt Cubes FITS Inspect by template ID Command Feedback Window Options List existing FITS Setup windowing files Figure 3 miopan pops up if the GUI button in the OS column of the GUI in Fig 2 is pressed of the DATAj columns of the IMAGING DATA table as FITS cubes for which image displayers already exist 2 4 2 MIDI Control Fig 5 is called by wmidi gt miopanControl or wmidi gt miinsStart panel OS_CONTROL The ICS submenu of the blue top bar produces ASCII outputs of sensor values and motor positions collected by ICS with examples shown in Figs 9 10 and 11 These outputs are not alternatives to the mimpan output 27 but complementary concise one shot composites of the most important information in the format of miiInspath 1 Its lower area displays a selective log monitor on the IWS hence displaying the operational logs of OS ICS including the LCUs and DCS DRO All these log lines are obtained by filtering the usual logFile with mio0pLogs 1 the main difference towards the logMonitor 1 39 2 11 being that the focus here is exclusively on the operational logs MIDI Observation Software Issue 1 5 235 VLT TRE MID 15824 0264 9 Autoclose 120 seconds mioSetupl fits DET WIN1 STARTX 1 DET WIN1 STARTY 1 DET WIN1 NX 320 DET WIN1 NY 240 Corr 0 mioSetupPRISM320 f
33. es of the VLTCS APR2004 distributed at the standard location in the ESO web pages which can push some of the FITS processing into the background Alternatives are to install the DETDATA directory on one of the two standard faster 9 GB disks of the IWS which would require some automated additional monitoring for the problem decribed in Sec 2 7 10 3 7 4 Identical Copies of TIME values in IMAGING_DATA tables Symptom Subsequent values in the TIME column of the IMAGING_DATA table seem to be equal in some cases Causes If the DL LCU runs without support by the TIM board it switches to time measurement based on the VxWorks clock which has a resolution of 10 ms 100 tics per second These data are transferred via EXPREP messages to NRTS which inserts these into the FITS files Workaround This is not to be discussed here because this is rather an ICS issue and would only occur with some test setups 3 7 5 UTC and MJD OBS differ Symptom The primary header keyword UTC of the FITS files is approximately 8 seconds ahead of the time specified by MJD OBS and OBS DATE Causes The header keyword UTC is created by ISS upon receiving a message approximately 7 sec onds before the start of the actual exposure The value corresponds to the definition of MIO_SERVER_OBS_DATE_DELA in mioSCHED_KW h Workaround This could only be improved by either re writing part of the OS or within the pipeline code The simplest solution is to work always with the M
34. f the TEL CHOP GUIDE so depending on the setting of TEL CHOP GUIDE the first group of frames may be on the sky or on the target The information used to compile the CHOP and SCHEDU messages is very up to date because OS retrieves it from the scanned ISS OLDB right after it received the START which is depending on some cpp variables about seven seconds before the first frame will actually be created by the ROE It therefore does not matter whether the template scripts continued interrupted stopped or re started the chopping within one of their OB s because the ISS data base reflects this new information However if the template scripts change any of these parameters by talking to ISS during an ongoing exposure MIDI will not notice this and assume that chopping went on periodically as predicted at the START time For interactive calculation of chopping SETUP parameters it offers miopanETC Fig 15 for debugging purposes it adds a COMMENT with the chopping start time to the FITS primary header there is no equivalent ISS keyword yet it displays the chopping frequency and status in miopanControl Fig 5 This also means the observation software has no means to prevent the ROE and the chopping mirrors from being out of phase sooner or later after the first frame integration if the actual detector cycle time and the chopping cycle time do not match well and the observation software does not correct or modify are adjust the chopping p
35. halt requesting for operator intervention Bulky frame by frame representations of schedules are ASCII dumps created with the button of mioSchedu 1 Fig 14 or FITS tables Sect 1 5 5 MIDI Observation Software Issue 1 5 235 VLT TRE MID 15824 0264 29 File Std Options Piezo Status Message recipients Message header ID lo fram batch 8 miiControl Environment wrmidi Name Jabcd_s midControl Environment wminrts Start Delay 5 s loplA jo m notused Environment Imiics1 loplB a mni VLTIDL fo m Repeat Lo Repeat lo Repeat o Repeat 3 Repeat 3 Repeat 3 CycTime 0 025 s IntTime 0 02 s OPDA 2 5e 6 m CycTime 0 025 s CycTime 0 025 s IntTime 0 02 s IntTime 0 02 s OPDA 2 5e 6 m OPDA 2 5e 6 m OPDB fo m OPDB fo m oppB fo m Chop Jo Mark 0 Chop 0 Mark fo Chop o Mark a Repeat 3 Repeat 3 Repeat 3 CycTime 0 025 s IntTime 0 02 s CycTime 0 025 s CycTime 0 025 s IntTime 0 02 s IntTime 0 02 s OPDA 2 5e 6 m OPDA 2 5e 6 m OPDA 2 5e 6 m OPDB o m OPDB fo m OPDB b m Chop o Mark o Chop fo Mark o Chop lo Mark fo Repeat 2 CycTime 0 025 s IntTime 0 02 s OPDA 2 5e 6 m CycTime 0 025 s CycTime 0 025 s In
36. hem see miinsStart 1 However these specific command lines will hardly be used since the generic wmidi gt miinsStart wmidi gt miinsStop already encompass them 2 2 2 Graphical Interface MIDI OS Engineering Graphical User Interfaces are created by either following push buttons on other Graphical User In terfaces or calling them by name Some of them are also bound to the ctoo STARTUP configuration on behalf of OS either wmidi gt miinsStart panel OS_ENGINEERING or wmidi gt miopanEngineering create Fig 2 Pressing the STARTUP and SHUTDOWN buttons of the OS column in this GUI is equivalent to miinsStart and miinsStop calls mentioned in the previous section The comment of Sec 2 2 1 applies to the GUls as well These specific opening calls are already configured to be part of the generic wmidi gt miinsStart wmidi gt miinsStop and only mentioned here to provide more detailed reference to what has been described in 25 from the outside MIDI Observation Software Issue 1 5 235 VLT TRE MID 15824 0264 MIDI OS Engineering wmidi Std Options Simulation CCS LCU File DCS ICS VLTI OFF OFF OFF normal LCU Simul IDLE 0 IDLE STARTUP STANDBY ONLINE SHUTDOWN GUI STARTUP STANDBY ONLINE SHUTDOWN GUI STARTUP STANDBY ONLINE SHUTDOWN Guia STARTUP STANDBY ONLINE SHUTDOWN GUI
37. hough other parts of the software have lower levels with more flexible and extended command interfaces all modes including the engineering modes of frequent or non frequent low level laboratory tests ought to be available through this standard batch job entry Besides this role of an executive of observation blocks it also is the top level door to an interactive monitoring of the subsystems which i assembles their most important state parameters including alarms that call for human attention ii provides a graphical user interface that leads to their individual main panels Ref 17 gives an overview of the task division between all software modules that contribute to MIDI irrespective of whether they do have an interface with the Observation Software or not and whether they are part of the observation preparation the online data acquisition or the post detection analysis Since the instrument user will command OS mediated by BOB and from an even higher level by P2PP 9 3 the user would not need to gain insight into OS functionality as long the meaning of user refers to an astronomer concentrating on the physical optical aspects of the light path on one hand and the detector data fetched from the online archive on the other skipping everything in between This is also the top down point of view taken in Fig 1 This wording reduces the User Manual to the following statements chapters these are the
38. in form of the ASCII editor mioSchedCrea 1 e in form of the mioSchedu GUI of Fig 14 Both ways allow interactive editing retrieval storage and message distribution of schedules Since a sender functionality is built into this class one can actually send such a schedule to ICS which following the incorporated start time lets the DL LCU trigger the ROE and start the communication with NRTS see miidevPiezSchedu 3 In summary this provides an engineering interface of exe cuting schedules independent of any OS server with properly synchronized piezo motion and detector integration if the GEIRS trigger mode has been set to external There is a third way of generation used by OS to create a schedule on the fly from a few keywords of the INS PIEZ category DET DIT and DET NDIT It consists of a filter of these specific keywords in form of mioSERVER SetupPreProc hooks functions during the SETUP phase temporarily stored in form of instantiations of the mioSchedKw class and transformed from this representation into schedules with the operator schedule of this class just before the START A hybrid form is also provided one may refer to schedules created interactively off line and stored at well defined places in the file system with the INS PIEZi FILEi SETUP keyword This provides means to let the OS server fetch complicated schedules which are not construable by the few keywords foreseen in the mioSchedKw interface class without
39. indicates the main flow of detector data Command exchanges follow the small arrows Note that this diagram does not describe a map relationship configuration hardware gt software 2 miopanEngineering derived from the template instrument standard xxopanEngineering 18 is also accessible by the Engineering option on the top bar of Fig 5 7 miopan pops up if the GUI button in the OS column of the GUI in Fig 2 is pressed 8 This list of FITS template files is created if the Window Files button of the GUI im Fig 3 is pressed 2a w t s debe ae aa la a Soe a 9 miopanControl derived from the template instrument standard xxopanControl of 18 is explained in micpanControl i s o s a4 sa gcra a caa dis spu 10 This auxiliary window is obtained by pressing the Disks button in the header bar of Fig 5 It is based on mioIstDiskInfo 1 a s ss iosa anmi aora op Kop do aag aa 10 This auxiliary window shows the Instrument Summary File ISF It is obtained by pressing the Help button in the header bar of Fig 5 selecting the ISF display option and chosing the file MIDI ISF cs sompok aaa Re Re RR RH ae 11 miopanStatus see miopanStatus 1 e 12 This auxiliary window is obtained by pressing the ICS button in the header bar of Fig 8 and selecting the Light Path option e e 13 This auxiliary window is obtained by pressing the ICS button in the header bar of Fig 8 and selecting the Te
40. ioTst This also takes into account that NRTS 25 demands a minimum set of keywords to be specified Use of an instrumen mode that involves the VLTI subsystem e g STARINTF instead of AUTOTEST would also merge the status information of the issifControl process if the TCS VLTI subsystem was flagged to be available at mioControl start time 2 6 Support Programs Programs of the mio module beyond the core functionality described above are listed below 2 6 1 Result File Copies The default path of the archival of data created in the DHS_DATA directory by the bossArchiver leads to the online archive see start vcsolac 1 Additional online copies of these FITS files to another workstation may be forked with mioFtp2Ews 1 if the mio mio test section of the mio module has been compiled 2 6 2 Detector Data Frame Display mioRtd 1 and Fig 12 is based on rtd 1 7 and displays detector data stored in the VLTI FITS file format on a frame by frame basis and as films 2 6 3 Online Archival The online archival programme which transfers data files that have been merged by OS is started with start vcsolac e at IWS boot time by an entry in sbin rc3 d depending on some definitions of bash envi ronment variables e at OS startup time from within mioControl1 1 if not yet running Blocking archival of any data that are regularly taken by OS is intended to be difficult but may be worth while if large test files are created that are k
41. ion in a later stage of starting mioControl Either ignore the log or silent this output by reducing the log level editing OCS CON LOGLEVEL in mimcfgINS cfg 3 7 2 The archived FITS files don t contain the header keywords inserted by DCS Symptom The DCS server s delivered binary FITS tables with primary header keywords which seem to be lost on their way into the ESO archive Cause The OS server inherits the standard boss behavior of creating primary headers from scratch During the merger processing by the bossArchiver 1 the primary header is lost Solution The proper way of submitting primary header information is to provide a list of keywords in response to the STATUS command and to maintain the mimcfgDCS cfg file compatible with the dictionaries MIDI Observation Software Issue 1 5 235 VLT TRE MID 15824 0264 33 3 7 3 Slow FITS Archival Symptom The time between the final update of the displays on the DCS workstation and OS returning to IDLE seems too long Causes A copy of a typical 100 MB file to INS_ROOT INS_USER DETDATA currently needs about 33 seconds N Housen priv commun July 2004 It is obvious that this occurs at least twice once for the mioDxf transfer from NRTS once for re writing the merged FITS file In addition the internet data transfer over the 100BaseT connection for mioDxf needs at least 10 seconds Workaround The WAIT command should be issued from the sequencer scripts as outlined in the release not
42. ion on files waiting to be archived with rm DHS_DATA fits This is the crucial step since otherwise restart of vcsolac would resume handling these e re start OS as usual Sec 2 2 1 to start another session that will resume standard archival of the FITS files 20 MIDI Observation Software Issue 1 5 235 VLT TRE MID 15824 0264 2 7 FAQ and Troubleshooting 2 7 1 Frozen VLTI Substate Symptom The VLTI substate indicated in some panels is frozen and remains unknown Cause The driver of the vltisim package does not implement state changes of the lt alias gt ISS vltiState vltiSubState database attribute actually what is the source in VLTI_ENVNAME Appl_data VLTI issmsw substate before scanning Workaround Ignore and or write a SPR requesting improvement of the vltisim CMM module 2 7 2 Persistent OS substate Observing Symptom OS does not return to the online idle state after starting an exposure but remains in the online observing substate Cause NRTS does not drive its exposure status database point of OCS DET1 DBEXPSTS The in dividual reasons might be the process minrtsControl died on wminrts or the scanning to wmidi fails The Abort button of BOB only terminates its internal handling of commands but does not forward an ABORT command to the OS server 20 5 5 Workaround Check with vccEnvCheck 1 that wminrts is alive Check with msgSend n wminrts minrtsControl PING that the NRTS server is still alive and check
43. its DET WIN1 STARTX 1 DET WIN1 STARTY 56 DET WIN1 NX 320 DET VIN1 NY 41 Corr 2 DET WIN2 STARTX 1 DET WIN2 STARTY 141 DET WIN2 NZ 320 DET WIN2 NY 41 Corr 2 mioSetup FIELD_OPEN_HIGH_SENS FullField fits DET WIN1 STARTX 170 DET VIN1 STARTY 61 DET WIN1 NX 40 DET WIN1 NY 40 Corr 2 DET WIN2 STARTX 170 DET WIN2 STARTY 145 DET WIN2 NX 40 DET VIN2 NY 40 Corr 2 nioSetup_ FIELD OPEN HIGH SENS T 0 110 fits STARTX 186 DET WIN1 STARTY 69 DET WIN1 NX 8 DET WIN1 NY 6 Corr 2 STARTX 186 DET WIN2 STARTY 77 DET WIN2 NX 8 DET WIN2 NY 6 Corr 2 STARTX 186 DET WIN3 STARTY 86 DET WIN3 NX 8 DET WIN3 NY 6 Corr 2 STARTX 186 DET WIN4 STARTY 153 DET WIN4 NX 8 DET WIN4 NY 6 Corr 2 STARTX 186 DET WINS STARTY 163 DET WINS NX 8 DET WINS NY 6 Corr 2 STARTX 186 DET WING STARTY 171 DET WING NX 8 DET WING NY 6 Corr 2 mioSetup_FIELD_OPEN_OPEN FullField fits DET VIN STARTX 170 DET WIN1 STARTY 61 DET VIN1 NX 40 DET VIN1 NY 40 Corr 1 DET WIN2 STARTX 170 DET WIN2 STARTY 145 DET WIN2 NX 40 DET WIN2 NY 40 Corr 1 mioSetup_FIELD_OPEN_OPEN_T_0 11C fits STARTX 186 DET WIN1 STARTY 68 DET WIN1 NX 7 DET WIN1 NY 6 Corr 2 STARTX 186 DET WIN2 STARTY 77 DET WIN2 NX 7 DET WIN2 NY 6 Corr 2 STARTX 186 DET WIN3 STARTY 85 DET WIN3 NX 7 DET WIN3 NY 6 Corr 2 STARTX 186 DET WIN4 STARTY 154 DET WIN4 NZ 7 DET WIN4 NY 6 Corr 2 STARTX 186 DET WINS STARTY 163 DET WIN5 NX 7 DET WINS NY
44. ld be obtained by reading information placed onto the reflective memory by the VLTI DL metrology system If MIDI is not the fringe tracker but for example FINITO the OPD columns are all zero 24 It should be noted that this is not an OS but rather an ICS and NRTS issue as these data columns are compiled by NRTS based on information originating from the MIDI DL LCU 1 5 7 Target table An empty OI_TARGET table 5 is added by OS e and ifthe VLTI subsystem is used in the current instrument mode refering to OCS MODEi SUBSYST e and if the VLTI subsystem is configured with NORMAL by the OCS TEL ACCESS keyword 6 MIDI Observation Software Issue 1 5 235 VLT TRE MID 15824 0264 2 OPERATOR MANUAL 2 1 CCS Environment The OS server lives in the CCS environment wmidi on the Instrument Workstation IWS wmidi This environment is started and stopped with standard VLTCS tools explicitly with vccEnvStart 1 and vccEnvStop 1 as described in 8 or implicitly in the course of running pkginBuild 1 36 or miinsStart 1 2 2 Startup Tool 2 2 1 Processes Starting and stopping of instrument subsystems OS ICS DCS VLTT is supported through software based on the Startup Tool 31 The MIDI implementation 25 supports the UNIX command line calls wmidi gt miinsStart proc OS and wmidi gt miinsStop proc OS on the Instrument Workstation to start the OS server processes mioControl and bossArchiver_mio or to terminate both of t
45. mperatures option e 13 This auxiliary window is obtained by pressing the ICS button in the header bar of Fig 8 and selecting the Interlocks option 02 0000 eee eee ee 14 mioRtd provides instances of the RTD to display VLTI FITS files Could also be called by pressing the RTD button in the menu of Fig 5 06 17 This auxiliary ASCII listing is opened together with Fig 12 if mioRtd has been called from Fig 5 It combines the outputs of mioFitsListstruc 1 and mioFitsListhead 1 mioSchedu the Engineering Panel to create and distribute Piezo schedule information to the subsystems Could be called by pressing the mioSchedu button of Fig 3 29 miopanETC is a pocket calculator to faciliate the conversion of timing formats 35 MIDI Observation Software Issue 1 5 235 VLT TRE MID 15824 0264 This page was intentionally left blank MIDI Observation Software Issue 1 5 235 VLT TRE MID 15824 0264 1 1 USER MANUAL 1 1 Scope Conformance The Observation Software OS provides a layer of functionality common to the Observation Software of a generic VLT instrument The operation preparation is supposed to be already finished and has reached a machine readable form 12 Sec 6 which under standard circumstances is delivered through the Broker of Observation Blocks 2 6 Decisions on observation modes and parameters have already been made with tools called the Observation Support Software Even t
46. n seconds is reported a negative value Cause If NRTS is run in simulation mode it may produce IMAGING_DATA tables in the FITS files which are unrealistic because the time difference between the first and last entry in the TIME column is smaller than the sum of the EXPTIME data The TIME data may even look like a sawtooth function of the FRAME data index Since OS computes DET DITDELAY by getting the time interval from the TIME column subtracting the total time of the EXPTIME and dividing by the number of exposures the value becomes negative Workaround Ignore and or request improvement of the simulated NRTS data files 4 2 3 Varying MJD OBS in a single FITS file Symptom The values of the keyword MJD OBS in the header unit of the IMAGING_DATA table and in the header unit of the IMAGING_DETECTOR table within a single FITS file differ by about 0 042 MIDI Observation Software Issue 1 5 235 VLT TRE MID 15824 0264 35 miopanE TE 2004 09 17112 23 45 237 1095423825 237 4 e 3 0 1296233976 Figure 15 miopanETC is a pocket calculator to faciliate the conversion of timing formats Cause This may happen if NRTS runs on a computer that does not run UNIX in the UTC time zone The mutual conversion between the MJD OBS and DATE OBS of the IMAGING_DATA entries is not yet dealing correctly with the problem considered in VLTSW20020534 Each hour of misinterpreta tion adds 1 24 x 3600 0 042 to the MJD OBS Workaround Reque
47. ng rlogin from a computer running another shell or SunOS 4 Run the GUI s with their own private xterm 1 following the template wmidi gt xterm geometry 80x2 e xxmyGui amp Do not push GUI s into the background with CTRL Z or whatever the suspend key strokes according to stty 1 are If necessary use the fg command of the bash 1 to revive 2 7 9 Strange and unrealistic temperature and pressure recordings Symptom The OS Control GUI reports strange temperatures or pressures like 8888 0 or 99999 0 Cause ICS uses unlikely values of temperatures and pressures to indicate that sensor devices are ei ther used in hardware simulation or cannot properly exchange commands with the actual electronic hardware Workaround This is not an OS but an ICS issue see 21 27 2 7 10 Detector Data Disk Full Symptom The START command returns an error reporting that the disk space is insufficient for the scheduled exposure The call wmidi gt mioIstDiskInfo DETDATA or clicking on the Disks menu button of Fig 5 confirms this Cause The IWS disk is of finite size and the data files accumulated in INS_ROOT SYSTEM DETDATA do not leave enough space the requirement is estimated from the number of detector integrations and the total pixel area of the FITS template files see eg mioFits2Win 1 24 MIDI Observation Software Issue 1 5 235 VLT TRE MID 15824 0264 Workaround First check that the keyword DET NDIT is of the correct order
48. nown to be junk The procedure in this case would be e start OS as usual Sec 2 2 1 MIDI Observation Software Issue 1 5 235 VLT TRE MID 15824 0264 17 El File View Graphics Real time Object 2004 02 05706 12 47 000_02 fits X z230 e Y ms Value ef amp Equinox e Min 0 Max 30007 Bitpix 16 Low 0 High 50007 Auto Set Out Levels _ Z z S s n Figure 12 mioRtd provides instances of the RTD to display VLTI FITS files Could also be called by pressing the RTD button in the menu of Fig 5 18 MIDI Observation Software Issue 1 5 235 VLT TRE MID 15824 0264 SIMPLE BITPIX HAXIS ORIGIN DATE TELESCOP INSTRUME HIERARCH ESO cov HIERARCH ESO cov HIERARCH ESO cov HIERARCH ESO cov ESO PARANAL 2004 02 05T06 14 55 3902 ESO VLTI U23 MIDI z FKS 47 53040 25950026 Header Listing for HDU 1 1 Aiska nathar INS _RooT ea Rees 2004 02 05T T file does conform to FITS standard 16 number of bits per data pixel 0 number of data axes 173 356443 70 19480 2000 360 2004 02 05T06 13 40 22358 500 37801 074 and Astrophysics E50 E50 E50 E50 E50 E50 E50 E50 E50 E50 ESO E50 E50 ESO ESO E50 Iss Iss Iss Iss Iss Iss Iss Iss Iss Iss Iss Iss Iss Iss Iss Iss GUID DEC GUID MAG GUID MODE GUID RA 822 European Southern obse
49. ntents 1 USER MANUAL 1 1 Scope Conformance 1 2 Environment 1 3 Sequentialization 1 4 Time Control 1 5 Data Output 1 5 1 15 2 1 5 3 1 5 4 1 5 5 1 5 6 1 5 7 Exposures with multiple files Templates with Many Exposures Primary Header Schedules scan presets Optical path differences 2 OPERATOR MANUAL 2 1 CCS Environment 2 2 Startup Tool 2 2 1 Processes VLTI FITS Format Target table MIDI Observation Software Issue 1 5 235 VLT TRE MID 15824 0264 ili 2 2 2 Graphical Interface MIDI OS Engineering 6 2 3 Command line Startup and Shutdown e es 7 2A Monitoring Graphical User Interfaces cuco eo Re oe Be e Oe e ee a 7 2 4 1 Distributor 24 445 6644 ee Re Re eS ee ee eo ea es 7 2AD MIDI CONO ss 6405 a ak oe Bee hee Dae bd Pee ea ee ee Ee 8 2 4 3 MIDI Status 42 2536 4b ee ae ek ee ee Ro a eG Aw oe ee 12 2 5 Server Command Interface 452 a s bee oe eR ae we es 12 ZOOL ACCESS A od Rede ee ek we A BOR ak ee gd a ee oe Bg 12 25 2 Standards Lori koa pigs hee Be i Se Bore A ol Sie we eee Be Sa 15 215 0 exemple qa ga beaks Bae RR Gon dS Re Gh EO Se amp A a ee does 16 2 6 Support Programs Lecaros g eud a be RS ee ew eee a aE D 16 2 61 Result File Copies s s s 3042400002800 ERE Rae RR ES 16 2 6 2 Detector Data Frame Display o e e e 16 2 6 3 Online Archival a ss anes asa ari e de eRe o 16 2 1 FAQ and Troubleshooting s sa seca 65
50. oice of primary header keywords may change in the future 1 5 4 Primary Header In exceptional cases the keywords RA and DEC may both be reported to be zero This is a decision made by the ISS 43 42 system and may for example indicate that the two telescope s ideas of their pointing directions is too different to agree on a common value VLTSW20020187 The MIDI OS does not attempt to appeal against this Note that any listings of the primary FITS header in 28 are irrelevant here since the primary header is not forwarded by NRTS to OS which means it is cut off when the bold line in Fig 1 passes NRTS 1 5 5 Schedules scan presets The MIDI specific SCAN_SETUP binary tables list on an frame by frame basis scheduled e detector integration start time MJD MIDI Observation Software Issue 1 5 235 VLT TRE MID 15824 0264 5 e detector integration time e positions of the two internal delay lines without regard to the delay line mirror translation stage as scanning patterns similar to what the IMAGING_DATA table will contain after having run the actual exposure The important difference is of course that the SCAN_SETUP tables do not have any knowledge of what the fringe tracking offsets of the internal and VLTI delay lines will be in the future and that the timing is an estimate based on the response keyword DET CYCLETIME of the DCS server before the START 1 5 6 Optical path differences The LOCALOPD column in the IMA
51. pipeline software seems to use an algorithm that computes a CHECKSUM over the entire file whereas the standard defines values for each HDU Note that this is out of scope of the OS because OS does not create any CHECKSUM keywords Workaround Ignore the content of these keywords MIDI Observation Software Issue 1 5 235 VLT TRE MID 15824 0264 37 5 APPENDIX 5 1 Acronyms BOB CCSlite CMM DCS DL DLMT DMD DRO DWS ESO FITS GEIRS GUI HDU ICS IDL ISF ISS IWS LAN LCU MIDI NRTS OIFITS OLAC OLDB OS P2PP Broker of Observation Blocks RTAP free version of CCS Configuration Management Module http www eso org projects vlt sw dev wwwdoc dockit html Detector Control System Delay Line Delay Line Mirror Translation Stage of the MIDI warm optics Data Management Division of ESO Detector Read Out Detector Workstation European Southern Observatory http www eso org Flexible Image Transport System http fits gsfc nasa gov Generic Infrared Software Graphical User Interface header data unit of FITS Instrument Control Software Interactive Data Language http www uni giessen de hrz software idl Instrument Summary File Interferometric Supervisor Software Instrument Workstation Local Area Network Local Control Unit Mid Infrared Interferometric Instrument http www mpia de MIDI Near Real Time Software of MIDI Optical Interferometry FITS Exchange Format http www mrao cam ac uk jsy1001 exch
52. rm of classes derived from the bossSERVER and the bossINTERFACE_DCS classes In addition the class to represent piezo schedules is kept here the windowing template files Sect 3 6 1 and auxiliary programs Sect 2 6 MIDI Observation Software Issue 1 5 235 VLT TRE MID 15824 0264 27 The directory mioDxf keeps the file transfer module which has been derived from the dxf module 32 with enhanced functionality concerning i disk space checks ii synchronization with symbolic links iii optional removal of files on the source machine after completion iv optional flagging of completion by filename dump into a OLDB attribute See the discussion under VLTSW 20010324 3 2 2 miopub This directory contains third party software packages not written specifically on behalf of MIDI Search for the string mathar in the unzipped source code to look for changes that have been made to adapt these packages to the VLT programming environment 1 CCfits is a C class library on top of cfitsio used at various places within the mio module to create or edit binary FITS files see http heasarc gsfc nasa gov docs software fitsio CCfits 2 westools 3 5 3is D Mink s library from http tdc www harvard edu software wcstools It is needed to correct the CMM module cat for use in mioFitsFNames 1 Since the associ ated SPR VLTSW20030475 has been closed by ESO without action it looks like this fix of the ESO module bug must stay forever
53. rvatory Date this file was written E50 Telescope Name Instrument used 11 33 25 5 RA 72000 pointing deg 70 11 41 2 DEC 32000 pointing deg Standard FKS years Coordinate reference frame Integration time obs start Observing date 06 12 38 500 uTc at start sec 10 30 01 074 LST at start sec inan SS Sa Sa Sa Sa Sa Tiina Tiaa Dins a a o Tf Auto Added Keyword FITS Flexible Image Transport System format is defined in Astronomy OFFSET OFFSET OFFSET OFFSET OFFSET OFFSET OFFSET OFFSET OFFSET OFFSET OFFSET OFFSET OFFSET OFFSET OFFSET volume 376 page 359 bibcode 2001A6A 376 359H 0000 ALPHA DELTA ALPHA2 DELTA2 OFFSADG OFFSADG OFF SADG OFF SADG OFFSADG OFF SADG OFFSGUY OFFSGUY OFF SGUY OFF SGUY OFF SGUY OFF SGUV OFF SGUY OFF S5GUVY OFFSGUY eooooooow CHOP STRT _TIME 2004 02 05T06 06 26 000000 Chop star 70 19479 f 70 11 41 2 DEC in 72000 12 00000 Given Coude guide star magnitude FIELD_STAB_TCCD WLTI mode of coude guiding 173 356685 11 33 25 6 RA in 72000 Figure 13 This auxiliary ASCII listing is opened together with Fig 12 if mioRtd has been called from Fig 5 It combines the outputs of mioFitsListstruc 1 and mioFitsListhead 1 MIDI Observation Software Issue 1 5 235 VLT TRE MID 15824 0264 19 e explicitly stop the client process with cleanup vcsolac e collect data with the intent to discard them e remove the archiver s not
54. s or Empty FIELD Filter wheel ArIII 13 Figure 9 This auxiliary window is obtained by pressing the ICS button in the header bar of Fig 8 and selecting the Light Path option Autoclose 15 seconds balzers A LS Camera Temp CN77k cryolite temp CN77 k co bench temp CN77 k black screen temp PV Neocera 1 Detector n LS n LS LS LS LS LS LS CN77k detector temp FilterWheel Temp Ambient Temp Dispersion Temp BeamCombin Temp Mi Temp ItermFocu Pinh Temp Shutter Temp 0 00031 124 26 IL SIS ALS iL Sh cal Bee ALS ae dle gaga 124 aitoli 126 abla il Sia Tarn Figure 10 This auxiliary window is obtained by pressing the ICS button in the header bar of Fig 8 and selecting the Temperatures option 14 MIDI Observation Software Issue 1 5 235 VLT TRE MID 15824 0264 Autoclose 20 seconds SENS36 SENS37 SENS30 SENS14 SENS15 SENS16 SENS17 SENS18 SENS19 SENS20 SENS21 SENS22 SENS2 3 SENS24 SENS25 SENS26 SENS27 SENS28 SENSZ9 SENS30 SENS31 SENS32 SENS33 SENS34 SENS35 Electronic Cab 1 Front Door Electronic Cab 1 Rear Door Internl Delay Line LCU fan Turbo molecular pump fault Turbo molecular pump accellerat Turbo molecular pump normal Closed Cyc Cool press Alarm Closed Cyc Cool temper Alarm Motor Encoder Power LCU 2 Motor Motion Temprat Intlck Closed Cyc Cool Panel Black Screen Panel
55. ssue 1 5 235 VLT TRE MID 15824 0264 e the state of the VLTI subsystem does not play a role while going ONLINE Since the DCS module is not yet doing this some support of running DCS simulations is also built into OS when it receives the ONLINE command Additional SETUP commands are forwarded to DCS as documented in the section about the OnlinePostProc member function in mioSERVER 4 3 4 Piezo motion and exposure schedules In this chapter a schedule is a piece of information on e when a series of detector integrations should start e how long the individual integrations should last e where the two piezos representing the internal delay line ought be positioned for the duration of this integration e which residual time should be allocated for background tasks data readout piezo mirror re positioning to complete such a cycle and e how often these atomistic operations ought be repeated concatenated Adorned by some administrative information a name or interspersed markers that may be inter preted by schedule readers for example this ends up in the strict layout described in the DATA FORMATS section of mioSchedCrea 1 The most compact binary representation of this information is distributed by OS in form of CCS SCHEDU messages to the subsystems The building blocks and an entire schedule are represented by the C classes in mioSchedCREA C which are given a command line interface in two more or less equivalent ways e
56. st improvement of the time handling within NRTS 36 MIDI Observation Software Issue 1 5 235 VLT TRE MID 15824 0264 4 2 4 Cannot start vltisim from the Simulation Control Panel Symptom If one presses the START button of the VLTI Simulation Control GUI shown in 16 which has been opened with the GUI button of Fig 2 nothing happens Cause The START button of the VLTI Simulation Control tries to start the processes in the sim ulation environment VLTI_ENVNAME but does not check that this environment is running Looking at the VLTDATA tmp logFile for example with the logMonitor reveals the error and the failed attempts to connect to the environment Workaround Write a SPR to request improvement of the vltisim module Then start the vltisim environment with the STARTUP button of Fig 2 which calls miinsStart 1 to start the environment the scan links and the auxiliary processes and should result in an ONLINE status in the VLTI column of Fig 2 4 2 5 FITS compatibility Symptom The format of the binary tables which have names that start with OI_ is largely incom patible with the OIFITS 29 30 standard Cause DMD decided not to take action on this issue see DFS02968 Note that this is out of scope of the OS because these tables are produced by pipeline software Workaround Ignore the content of these binary tables Symptom The CHECKSUM values of the FITS files are wrong Cause As discovered in 09 2005 some part of the
57. t the corresponding Makefile of the CMM module minrts grants sufficient rights if it compiles the INS_ROOT directory from scratch under the midimgr account Symptom 3 The UNIX process mioControl does not start but complaints about missing reference files in vltdata tmp logFile Cause The reference files provided by the mioseq module are either incomplete if compared with the OCS MODIi SETUP list in mimcfgINS cfg or faulty Workaround Ensure that the mioseq config ref in the mioseq module are correct and that the make clean all man install step in the mioseq module distributes them correctly 2 7 4 Cannot complete User defined function Symptom mioControl returns with the error bossExpoCtrl C 1832 1090 922 1 S bossERR_CMD_FAILED_APP Could not complete User Defined function during the execution of command START Cause One of the MIDI specific tasks of the OS server was not completed sucessfully after receiving the START command The prospective causes are e The contents of the SCHEDU command was rejected by lmiics1 because the motion schedules for the internal delay line was out of bounds e The contents of the SCHEDU could not be delivered to NRTS e The environment was partially started as midimgr ignoring the explicit advice of 25 which means that data file permissions in INS_ROOT INS_USER DETDATA are insufficient Workaround e Check that the internal delay line parameters stay both in the range of about 0 to 15
58. tTime 0 02 s IntTime 0 02 s OPDA 2 5e 6 m OPDA 2 5e 6 m OPDB o m OPDB fo m OPDB fo m Chop o Mark fo Chop fo Mark fo Chop fo Mark o Command Feedback Window Options Repeat 3 Repeat 3 Send Duration frame strokes Save Load ASCII dump Plot Figure 14 mioSchedu the Engineering Panel to create and distribute Piezo schedule information to the subsystems Could be called by pressing the mioSchedu button of Fig 3 30 MIDI Observation Software Issue 1 5 235 VLT TRE MID 15824 0264 3 5 Chopping synchronization The observation software supports the synchronization between telescope chopping cycles and the detector readout cycles as follows e It informs the LCU lmiics1 at the start of each exposure that means right after it received it self the START command via a CHOP command on the timing parameters start time frequency status which allow the LCU to compute at each time in the future the current chopping phase by looking at its accurate TIM based clock For the detailed set of this information forwarded by the CHOP command see the description in mio config mioSpecific icdt If chopping is active it aligns the start time of the first ROE frame which becomes part of the SCHEDU message to a time in the future which is an integer number of chopping cycles away from the chopping start time Caution this is currently done without regard o
59. ted with the telescope chopping cycles the probability of an U flag for the TARTYPj becomes 2 U d c if chopping is active where U is the constant time window assumed for each of the two chop mirror transitions d the detector integration time and c the inverse of the chopping frequency 22 Decoupled from any server functionality offline display of the windowed data or conversion of this format into FITS cubes is made available through the programs mioRtd 1 and mioFitsCnvrt 1 A request to have this display capability in the rtd module rtd 1 has been made in VLTSW20030093 and has been rejected by ESO 1 5 2 Exposures with multiple files The data are split such that no file becomes larger than 100 MBytes This maximum size is actually configurable through the OCS DET FSIZMAX keyword in the instrument configuration file mimcfgINS cfg To take effect the mimcfg module must be properly installed after changing the keyword Note that the configuration is only read after restarting OS 33 The convention of 12 that MJD OBS and DATE OBS keywords in the primary headers characterize the start of exposures is invalid for MIDI data files These two keywords report the start of the first frame integration of the individual file which ensures that these two keywords are unique even if the results of an exposure are split over several files since MIDI is a one detector system Correct reassembly of the individual files to exposures is possible
60. tem that is not on the list Cause SETUP keywords have been sent which are not compatible with the most recently set INS MODE according to the instrument modes declared through the OCS MODEi configuration key words The most likely reason is that TEL keywords were used in combination with the AUTOTEST mode Workaround Correct the sequencer or shell scripts that set up and run the exposure 2 7 8 Stopped Graphical User Interfaces Symptom Starting a GUI in the background by use of the UNIX shell ampersand freezes the contents of this GUI which includes that refreshing of the window is missing The issueing shell reports the corresponding background job as stopped Cause The bash 1 under HP UX works with a serial line interface policy that lets the background process of the GUI compete with the foreground process on the association binding to the serial line interface MIDI Observation Software Issue 1 5 235 VLT TRE MID 15824 0264 23 Workaround Use one of the following 1 Issue the command set m on the HP UX bash 1 before pushing GUI s into the background 2 Redirect the standard input and error outputs of all exec commands in tcl scripts to dev null as far as possible Edit the default line of the executable in the same way to become exec seqWish 0 1 0 gt dev null 2 gt dev null lt dev null This is an option only available to the developpers 3 Do not use HP UX xterm for example by usi

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