User's Guide
Contents
1. lt lt ETPOZT auap nj2e gt gt gt CR PT TELE 769p uugbid lt lt gppOT T 8599 pEEc uugpbid lt lt lt popozt abessa 4 O AQisuaquy pueudula OL Aysuaul uj Ay inis eusp Aten D Z eque OS TET OTOC G0 cC PIG User s Guide ajIqie dnas aping Japo2u3 unipstu aul e paads r 3599 reeel jubisH uibus apo prater 3u e AOA Jou a jenue A 1OsUas P upina japoa2u3 69 T 9t Sy bios oe nag O0SF yod Old ST9 PT 71 TITE SCIT PE EEST ET YONE EEZT SE gozso d d pa T5888 apnybug 025 cCUTGCO9T ssa1ppwy Old dOTls 3 6 PIG User s Guide The first sectors being described are the general settings and the grid of the sun FIG Address DEM Above the solar grid section one can enter the IP 169 254 0 2 4500 address and the port of PIG The geographical longitude Geo longitude Ge latitude and latitude of the observatory s location are also part of EISE Ed this sector To stop the GUI one can click the STOP uS Br s button at the upper left corner 3564 61 7 05205 251233 The grid of the sun is created and drawn immediately after the GUI is started The GUI uses the date and time of the computer and the calculated astronomical ephemeries and geographical information to calculate the Rsun BO and P The image of the sun is illustrated yasimple XY graph available in LabVIEW so that all tilizations of XY graphic are a2. PIG User s Guide User s Guide PIG runs on the controller as a standalone system After switched on the main function of PIG will be loaded into the RAM memory PIG finds the set up file on the USB stick and loads all necessary data If there is no USB stick or if there is no set up file on the USB stick PIG will use the standard values saved in controller s memory Now PIG connects to the positioning sensor via a RS232 port A command to initiate the sensor will be sent After that the sensor 1s ready to receive query commands and send back reports The SubVIs to control the motor will be started next All channels of the digital output module are reset to the state off The specific motor program is loaded and started and is ready to change the output values Now PIG starts the multi client server and all SubVIs waiting for commands All commands from users or scripts will be filtered firstly by the server This first filtering 1s raw The beginning of all commands is compared with the command list array All faulty commands will be sent back immediately with an error notions The passed commands are saved in a global array and are treated by the relevant processes Indeed users can work with PIG only through the LAN connection It is very simple to work with PIG in a text based mode All client programs like te net in Unix Linux putty in Windows can be used to communicate with PIG The complete list of PIG commands with an example c
3. a click on the respective line is enough The values of the clicked line will be automatically taken to the control coordinates X Y B L There are seven buttons in order to send the corresponding commands to PIG Query actual query for 3 actual values from sensor X Y and Intensity Query selected query for the selected position If the selected position is not yet saved in the table it will be saved automatically The position of c cursor is also changed to this position Select input sends the entered parameters to PIG Select actual lets the actual position be the selected position Guide starts guiding Guide follow starts guiding and following the solar rotation B L 99 Encoder Guiding PIG cannot only guide the telescope with sensor but also with aid of encoder Guiding mode hanae a model When PIG is just holding the position then the user can choose between sensor and encoder as the information source for PIG The button Change g mode change the guiding with encoder to sensor and reverse The button Encoder Guide activates the guiding with help of encoder This function works the same as normal guiding only that the position is measured by encoder in state of sensor With aid of encoder PIG can also guide the telescope to the sun or go back to doom position The two buttons Go to sun and Go home are respective the activation there
4. an be found in the attached document As a part of this project a graphical user interface GUI was also developed and is described below Explanation for flat field mode In flat field mode the telescope will be guided along a zigzag path The path is defined by the current position the length along length I i x axis ffmx the height along El y axis ffmy and the speed of E guiding process ffms The telescope is firstly guided x y meanders from actual position i x y to position x l y h and then back from position x l y h to x y The difference between flat field mode and other guiding processes is that in flat field mode the guided position is not adjusted That means that the target position must not exactly be x l y h The controller calculates the average time to Guiding path in Flat Field Mode guide the telescope and the guiding process is then based on this calculated time values For 1 6 PIG User s Guide example the flat field mode has parameters length 200 height 150 speed 1 fine speed and the velocity in east west direction 1s e g 20 tenth of arc seconds second and in north south the velocity is 15 Then the calculated time in east west direction 1s 10 seconds and the guiding time in north south direction 1s 7 times with 2 seconds each time Accordingly PIG guides the telescope 10 seconds to west then 2 seconds to north and then 10 seconds to east and 2 seconds to n
5. fore 5 6 PIG User s Guide The flatfield mode is a special mode of PIG which guides the telescope in a zigzag path With this special movement the quality of CCD 1mages from mostly spectra will be improved The parameters of flatfield mode can be asked by Flatfield Mode 35 the button Query ffm To select new parameters T the user can enter values into the numerical va acu controls or take the value from the grid oo LES selected parameters are saved in table Selected flat field parameters for further use The table can p za be saved in form of text file and be loaded by M iurm another GUI Start ffm starts the flatfield move of the telescope Guide off stops it 22 09 2010 12 04 54 3713 22 09 2010 12 04 48 22 09 2010 12 04 14 a EE NENNEN pq p 6 6
6. orth After 7 loops each loop of 2 seconds to north the telescope reaches the target position Next the telescope meanders back to the start position and again to target position until the user turns the flat field mode off 2 Graphical user interface GUI With help of the command list above the user can use all text based TCP communication tools like telnet to connect with the PIG module In fact because of the length of the command list it 1s hard to keep all commands in mind Furthermore for the automation objective the development of a GUI is indispensable The GUI helps the user to overlook and control all important function of the telescope A GUI can be developed with all programming languages which support network programming Herewith LabVIEW is a good choice to make GUI LabVIEW is firstly a graphic programming language so that the design of a GUI 1s much simple and comfortable LabVIEW has also many defined networking SubVIs which can be easily used to connect with PIG The picture on the next page shows the complete GUI One can easily realise that GUI 1s divided in many different sectors corresponding to different tasks of PIG Each task of PIG is fully visualised so that mistakes by typing or maltreatment can be simply avoided 2 6 serr cevor ets GEE EZ Sos r THT L g A pem Buipino ENSURE iBuiping osz Aysue1u Guipins Fobbe Awa ooo Cereb ET9 Abid gt gt gt ZePOZT orspins npe lt
7. r can also manually control the motor In the manual sector there are all control components required to control the motor The velocity can be chose by a radio button Velocity Eight available buttons corresponds to 8 directions the telescope can move Each button is a toggle Pressing the Guide off button also stops moving the telescope Manual Control Velocity w fine medium 4 6 PIG User s Guide The most complex sector is the guiding sector This sector corresponds to two most frequent tasks of PIG Guide and Guide and following the sun s rotation The desired position can be entered ENDE into 4 numeric controls One can enter the l position in 1 10 arc seconds X and Y with A ui IgE respect to the disc centre as well as in 250 heliographic coordinates B and L The GUI s Guiding changes the units automatically when the 4 86533 73 3391 3 user enters parameters That means when the user enters X and Y the GUI calculates the respective B and L values and vice versa The position can also be taken from the grid of the sun by the c cursor There are one LED reflecting the status of the motor Guiding If the telescope is in guiding mode this LED will have the value true The table Selected position stores all selected positions One can save the table for T later use and load a saved table back into the memory To take a position from the table
8. vailable for users e g zoom the view choose a part of the image use a Cursor BH zu w Two cursors are shown in the image The actual cursor shows the actual position of the telescope This cursor cannot be dragged by the user The c cursor can be moved by the user One can drag this cursor to a desired position and choose the osition of the cursor with the button cursor pos When this button is clicked the position of c cursor is ww taken by the guiding sector The parameters of Flat cunorpes field mode can also be taken from this cursor by clicking take ffm B 20 631 L 114 515 teke firm i The next sector 1s the massage field The massage field reflects all activities of the GUI It shows all perma commands that are sent to PIG as well as reports received jmd Intensity OEE from PIG With the Command line any PIG command can be 124448 gt plaffm A690 07141 gt disposed as an ASCII string uke cane sua The boolean LED Intensity OK shows the status of due E intensity true means that the intensity 1s higher than the min intensity of the sun s image on the position sensor The most important button of this sector is the button Guide off With this button one can stop a currant guiding process and set the motor free for other operations like manual control Ree shee Although the GUI is mainly made for automation objectives the use
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