DVI V1.4 USER MANUAL DRAFT
Contents
1. the list can be narrowed down if needed Now you are able to add a selected object to your observation list by simply selecting an object from the list and then pushing the Add to Obs List button or do a visibility calculation for the selected object by pushing the respective button Observation Record One of the new features in DVI release 1 4 is the Observation Record Database which allows you to keep track and make records of your observations fj Deep Sky Visibility Indicator DVI VL4 xism Deep Sky Visibility Indicator v 1 4 Add Delete Madify Select observation ff observation observation View ot cords 49 Kon gt Ein iz Bee n uro 4 3 2010 1950 Bussumerheide Huiz 19 49 6 12 Computerized Dob 40mm Vixen NLY 40 lt none gt Leuke symetrie met 4 sterren in een vierkant en 6 in een rechthoek Messier 42 4 3 2010 2020 Bussumerheide Huiz 19 49 6 12 Computerized Dob 40mm Vixen NLY 40 lt none gt Altijd machtig om te zien die Orion nevel Al veel gezien in het verleden maar nog nooit Messier 81 4 3 2010 20 50 Bussumerheide Huiz 19 68 6 12 Computerized Dob 40mm Vixen NLY 40 lt none gt In een blikveld M81 M82 Zag beide in 1 oogopslag omdat de kijker precies in het midden van deze 2 stond Bij een grotere vergroting valt niet veel meer te zien Bij 40x is het ook alleen maar een wazig wolkje zonder details Messier 82 4 3 2010 P Bussumerheide Huiz Computerized Dob 40mm Vixen NLV Tegelijk met M81 in de2. 11h28m30 8s 58 33 43 11 7 1 2 x 0 8 Gal IC 691 UGC6447 UMa 11h26m44 3s 59 09 20 13 33 x 23 Gal NGC 3893 UGC6778 UMa 11h48m38 4s 48 42 34 10 8 3 1 x 1 6 Next thing to do is to save the file as a semicolon separated file with the extension csv this file will look as follows when you open it in a plain text editor Type Object Reference Const RA DEC M Size Gal Arp 299 IC 694 UMa 11h28m30 85 158 33 43 11 7 1 2 x 0 8 Gal IC 691 UGC 6447 UMa 11h26m44 35 59 09 20 13 33 x 23 Gal NGC 3893 UGC 6778 UMa 11h48m38 45 48 42 34 10 8 3 1 x 1 6 This file can be used by the Import function The header line keywords the Import function will recognize are Object Reference Common name Const Type M Size OM VI RA DEC R The mapping to the columns in the Observation List is self evident but be mind full that the header line words are case sensitive Deep Sky Visibility Indicator V1 4 User Manual e N Chapter Annex 4 Import function Annex 5 Error messages There are quite a number of error messages most of them are self explanatory However a few deserves special attention They are listed below to be completed Deep Sky Visibility Indicator V1 4 User Manual NJ N Chapter Annex 5 Error messages Annex 6 Backup and Restore Although great care has been taken to develop DVI cannot guarantee that no information will be lost This is esp
3. Figure 4 Observation List window Most of the columns are self explanatory however the following columns might need some explanation Deep Sky Visibility Indicator V1 4 User Manual Co Chapter How to operate the tool Type This is the type of object an explanation can be found in Annex 2 ODM VI Optimum Detection Magnification Visibility Indicator R indicates that this is a so called Reset Star Indicates the Record number or line number in the so called scroll files this in only applicable when using scroll files le Zo O When you are in the Observation List window there are numerous options When you push the File Menu button the following sub menu will be opened Deep Sky Visibility Indicator File Men 7 click here to close File Menu From left to right the buttons are New Generates an new observation list Open Will open an existing observation list Save Save As Saves the list in a CSV format that can be read by e g Excel as well Print Will print the list to the default printer Import Imports an observation list generated with another program see for further explanation below Export Will export the observation list to an external program see for further explanation below Exit Exits the program The File menu bar can be closed by clicking on the area around the buttons Furthermore in the centre of the upper part of the screen the following butto
4. The Visibility Calculation window is the opening window of the program In order to do a specific calculation for your estimated night sky conditions you will need to fill out either the Limiting Magnitude e g what is the highest magnitude you can see with your naked eye at a normal night at your observing site or if you have a SOM Sky Quality Meter you can do a measurement and fill out the Sky Background Brightness SBo See Annex 1 Limiting Magnitude and Sky Background Brightness B Deep Sky Visibility Indicator DVI VLAxism Deep Sky Visibility Indicator v 1 4 Next either ao a fill out the Object box 10 Limiting magnitude at the un aided eye or use SBa if known X SBo 0 5 Sky Background Brightness if known 20 33 based on LM Used Sbo 20 50 with the magnitude of the m 0 Magnitude 1 H Maa 5 00 Major axis arcmin object the major and E minor axis size in arc Visibility indicator 8 O invisible 2 bad 10 very good MAGopt 43 Optimum dectection magnification minutes of the object or NOTE Optimum detection magnification based on an exit pupil of 7mm b in the object selector Author M Maters um Based on algorithms from R Clark Messier box select a catalogue and Blackwell Surface data supplied by J R Torres i I Further valuable contributions by J H M van Gastel The Crab Nebula NGC1952 a number Version 1 4 r i Date 13 mei 10 oger meee agato info Finder O
5. and can be freely downloaded from the Microsoft website For more information about the NET framework see http msdn microsoft com en us netframework default aspx Deep Sky Visibility Indicator V1 4 User Manual W Chapter Quick Installation Guide PLEASE READ BEFORE OPENING EXCEL FILE Introduction What can be more frustrating for a beginner amateur astronomer then going out in the dark cold night with your telescope making sure the scope is properly aligned or if you have a GoTo system it is properly initialized only to discover that you can t get any sight of the first few objects you are trying to observe This tool helps rookie or perhaps also the more advanced amateur astronomers to give at least some clue or if you will indication about the visibility of certain deep sky objects the tool won t work for stellar or stellar like objects After its first incubation the tools developed further and features to manage observation lists were added Now those features are the lions part of this tool enabling you to manage and optimize observation lists Many people will use a planning program e g Sky Tools to make observation lists believe that this tool can still provide a powerful addition to those programs because e DVI enables you to optimize your observation routes e DVI enables you to add reset stars e DVlis capable of importing separated files csv extension which can be created by mos
6. kijker gevangen wist dus meteen dat dit de Sigar Gx moest zijn zo overduidelijk was dit Echter geen details te zien Messier1 4 3 2010 a Bussumerheide Huiz Computerized Dob 40mm Vixen NLV MI was meteen zichtbaar in het oculair Echter wel alleen als een wazig wolkje zonder verdere Messier 45 4 3 2010 Bussumerheide Huiz Computerized Dob 40mm Vixen NLV Altijd mooi om te zien het 1 graad beelveld is eigenlijk net iets te krap om MAS in zijn volle omvang enin zijn omgeving te zien Messier82 6 4 2010 amp Bussumerheide Huiz Computerized Dob 40mm Vixen NLV lt none gt Voor de 2e keer dit keer ook direct zichtbaar met M61 ernaast Messier81 6 4 2010 Bussumerheide Huiz Computerized Dob 40mm Vixen NLV lt none gt Ook weer tegelijk met zijn broertje M82 Messier 97 6 4 2010 Bussumerheide Huiz Computerized Dob 40mm Vixen NLV lt none gt Nooit gedacht dat ik deze meteen zou zien het blijft nog wel een fuzzy bij deze SQM Messier 51 6 4 2010 ji Bussumerheide Huiz Computerized Dob 40mm Vixen NLY lt none gt Eindelijk gezien het leken er wel 2 naast elkaar 2 blobs zeg maar toch nog maar even de plaatjes checken Messier 3 6 4 2010 Bussumerheide Huiz Computerized Dob 40mm Vixen NLV Echt duidelijk zichtbaar als een heldere ronde bal Tot nu toe het duidelijk waarneembaarst Ook hier even het plaatje checken Messier 53 6 4 2010 Bussumerheide Huiz Computerized Dob 40mm Vixen NLV Gezien wat meer kan ik zeggen Mes
7. same directory as DVI V1 4 xlsm b In the excel Trust Center in Dutch Vertrouwenscentrum make sure that you will accept Macros and have the proper Active X settings You can do this by opening Excel NOT DVI V1 4 xlsm and a Click the Microsoft Office Button Ea and then click Excel Options Click Trust Center and then click Trust Center Settings c Active X Settings Select 3 option i Warn before d Marco settings Select 4 option i Enable all macro s Notes 1 I m not 100 sure that the above is a proper translation since work from a Dutch excel2007 version Allowing Macro s can be harmful if non trusted excel applications workbook are opened noticed that on rare occasion for some obscure reason the program doesn t work for some installations of Excel2007 I m clueless to what the cause might be Any help or feedback on this would be appreciated Now simply open DVI V1 4 xlsm and installation will be handled automatically It might be advisable to read Annex 6 Backup and Restore when you intend to use the Observation Record Database Prerequisites For proper operations of the Finder chart functionality and the inverse function of Image you will need an internet connection and the Microsoft NET framework version 3 0 or higher needs to be installed on your PC LapTop This NET framework comes automatically with the Vista operating system and its successors
8. the indications in a 3D representation for different Sky Background Brightness s The resulting 3 D graph should give you some indication for different Sky Background Brightness and magnifications about the visibility of the selected object From this graph you can go back to the Visibility Calculation by pushing the respective GoTo button on the graph See for an example of the Visibility Surface graph the front page of this manual Managing Observation Lists and Optimizing Routes As soon as finished version 1 1 of the tool including all the catalogues with over 28 000 objects readily available at my fingertips realized how powerful it would be as could add functionality to create and manage observations lists To add objects to the observation list simply push the Add to observation list button in the Visibility Calculation window The selected object will be added at the bottom of the observation list The remaining functionality can be found when the GoTo Observation List button is pushed from the Visibility Calculation window fj Deep Sky Visibility Indicator DVI V14 lsm p Sky ty Deep Sky Visibility Indicator v 1 4 File Delete Move Move Up Reverse GoTo GoTo GoTo GoTo Menu Item Route Observed List f Routing Graph Catalogue DEUS Calc Creation Date 10 jan 10 i Image Nbr of items 22 Cale Closeby B Manually S observed list File CYG csv azet Cyg 2112562 4301337 13 DVTVET USER MAN
9. Deep Sky Visibility Indicator v1 4 User Manual 17 5 2010 M J Maters Table Of Contents Quick Installation Guide PLEASE READ BEFORE OPENING EXCEL FILE eese 3 WARPOCUCEION sieaa aa dela E A a E a aa aE EEN aaa 4 How to perate thetol eR e e UTE rere esa e Rar Fave PA EEEE EERE 5 Visibility Calculation and Visibility Surfac nnsns uren enennennen enen nennen nnne nennen nnne 5 Visibility Calc lation 5 2 0 dert ets dee ete reve estu Rer is aeS 5 Visipility SUFTACE giese eures tet t deem e del anced reed etae neca deae ce Rr eus 8 Managing Observation Lists and Optimizing Routes nunnnnsnns eren nennen enne nnn nnn 8 Deng d degenen 10 Export Generate Scroll File x ttr eot ere a E eese TU de enr eoe UR PN vaandels 10 UL ee t e CERNERET EE TE TTD DE 10 Observation Routing Graph and route optimization nnn seensnnneenerrenensnneneerversnensnensensnens 11 Catalog Ue eros Mende ne Mt er LM LI E D i dre 11 Observation Ces eneel 12 elei EET 15 Using an external OO ote Eher eme Petr ed rr EUR EU Te Eon Ev ERREUR 15 Add a couple of initial objects nnnan sneren ennneen nennen nnne a nsns sns n nra a sas sss aaa 15 Creating an observation list by constellation enn eene enne nnn nns 16 Wa leto 6 Fes a UTD ERR 17 Annex 1 Limiting Magnitude and Sky Background Brightness nun an snennenner vereren
10. bject Selector in the Visibility Calculation window select your objects and if required check the Visibility of the chosen objects and add those objects to the Observation List with the Add to Observation List button Using the Object Info button will give you the possibility to link to www sky map org to get a visual of the objects on the internet Step2 Once this is done go to the Observation List window and for each object use the Find CloseBy button to go to the catalogue to see if there are more interesting objects to be added to your observation list Before adding more object ensure you check the visibility of each object using the Visibility Calc button in the catalogue window Deep Sky Visibility Indicator V1 4 User Manual Ul e Chapter Workflow Step 3 From this point onward follow steps 3 until 7 in the previous workflow Using an external tool Creating an observation list by constellation This workflow became my favorite after first having used the workflow as mentioned above This workflow is based on the idea to observe objects by constellation Step 1 Step 2 Step 3 Step 4 Step 5 Step 6 Go to the Catalogue window and ensure the field of view is set to Show All With the Const dropdown list select the constellation for which you want to create an observation list With the Catalogue dropdown list select your chosen catalogue and add the chosen objects
11. bject using the catalogue or observation list when you check the visibility of an object included in the observation list I ll come back to the later two further on The Image button will download an image source STScI Digitized Sky Survey of the Palomar 11 Finder Chart selected object and show this in a separate window You can inverse the image if required and make a print out of the image Remark Depending on the size of the object this might take a while Inverting the image might also be time consuming See example on the next page The Finder button will download a finder chart source www Messier45 com for the selected object and show this in a separate window In the window only the detailed view will be shown when printing the finder chart see example on the right hand side a naked eye view and view finder view will also be presented with Field of View circles in the detailed view Remark Depending on the size of the object this might take a while Warning Only one Image or Finder window can be opened at the same time Before opening another Image or Finder window please ensure that the previous window has been closed Figure 2 Example Finder Chart With the Object Info button you will get a pop up with more information about the object and it will give you the possibility to link to www sky map org to get an visual of the object on the internet Deep Sky Visibility Indicator V1 4 User Manua
12. bservation List Now 2 things have GoTo Observation List f GoTo Catalogue happened Figure 1 Opening screen DVI The Output box has been updated to show a visibility indicator now if this says O ZERO you most probably won t be able to see it You might try it especially if you re a more advanced observer but it is anyway best is to Deep Sky Visibility Indicator V1 4 User Manual Un Chapter How to operate the tool Observe the graph carefully and perhaps also the Visibility Surface on the next sheet see explanation below Any value for the visibility indicator between 1 10 is more or less good and try your luck It also gives you a clue about what magnification for optimum detection to use in the field below that Reading the graph The horizontal axis give you a possible magnification to use between 30 and 480 don t try a magnification higher than 1 5 times the diameter of your telescope in any case or a low magnification whereby the exit pupil is greater than 7mm exit pupil DIAM in mm Magnification When the value for a specific magnification is below 0 35 Don t try this magnification you will be most probably be disappointed In summary the higher the number for a certain magnification the better your luck On top of the graph you will find the source of the data presented this can either be object selector when you use the method mentioned above catalogue when you check the visibility of an o
13. ecially important when using the Observation Record Database functionality It is therefore advised to make regular backups of the data Below is explained how one should do this On initial startup of the application DVI will create a directory structure under the root directory on your main hard drive If your main hard drive is labeled C then the directory C DVI is created together with the subdirectories Image and Backup in this folder On each new session DVI will make a copy of the data in the Backup folder It is advised to make regular backups of this directory structure If due to unforeseen causes the data is corrupted simply copy the Backup data back to this directory structure If the data is corrupted and if no backup is made of the data the last un corrupted data will still sit in the Backup directory One can simple copy this back to the main DVI directory If one has to do this it is advised to make an additional copy of the Backup data first before DVI is restarted again Once DVI is restarted it might overwrite the Backup data with the last corrupted set of data Deep Sky Visibility Indicator V1 4 User Manual WwW N Chapter Annex 6 Backup and Restore Annex 7 Release Info Known Errors and Feedback Release Info Rel Release Date Description 1 0 1 1 1 2 1 3 1 4 Known errors 2 dec 2009 5 dec 2009 9 dec 2009 11 01 2010 13 05 2010 Initial release Refined calculatio
14. elease Info Known Errors and Feedback
15. enansennsen 18 Annex 2 Explanation of the field Type in the catalogue ccssccecccesssesssceceeecessessesteaeeeesesseesenaees 19 Annex 3 Note about the Catalog 2 itecto dtc he re rd edet a ROS Foe 20 Annex 4 Import function 0 0 0 2 cceecescceceeeeceessssseesececussessaasececessessnanausecucacsussaussansececessesscesaesenseessassanseees 21 Annex Ertor tmessages cce isch essc tude Sedetedesadecdsaatouccdurssecadtssteccessbecdecseaeeede ben 22 Annex 6 Backup and R StOFe cssscccccecessssesssaeeeceescsesenaeeeecuseesesauaeeesecsssceesaauaeseeecssucesasaeeesesssessaaeess 23 Annex 7 Release Info Known Errors and Feedback eee nen se nnne 24 R lease a M 24 Map Recte M 24 Suggestions feedback and distribution list nnen arseen eeen snneenensnereeeensnerenensnnersenennenens 24 Deep Sky Visibility Indicator V1 4 User Manual N Chapter Quick Installation Guide PLEASE READ BEFORE OPENING EXCEL FILE Quick Installation Guide PLEASE READ BEFORE OPENING EXCEL FILE DVI version 1 4 is only available for Excel2007 and higher When DVI V1 4 xlsm is first opened it will create a directory structure on your main hard drive directly under the root directory and will automatically save DVI V1 4 xlsm again Before opening the excel workbook the first time make sure that a ViewObject exe is placed in the
16. ensus here but based on discussions and backed with extrapolated data from the Dutch Meteor Society important to note for the skeptics amongst you is that the data used is not only measured in The Netherlands it is reasonable to set this at magnitude 7 0 Next then is to consider which translation formulas to use I ve looked at 3 different options a SB 21 58 5Log 10 599 V 5 1 as suggested by Nils Olof Carlin b SB 24 19 2 814LM 0 3694LM as suggested by Jos Ram n Torres c SB 22 5Log 10 5 1 as suggested by Jan van Gastel based on the initial formula by Nils Olof Plotting those formula s against data from the Dutch Meteor Society based on over 500 observations see figure below it became apparent that the last formula as suggested by Jan van Gastel matched the data best Hence in this program this formula will be used Deep Sky Visibility Indicator V1 4 User Manual oo e Chapter Annex 1 Limiting Magnitude and Sky Background Brightness Annex 2 Explanation ofthe field Type in the catalogue The field Type see table below corresponds to the type of object and gives further information The most complex type information is given for galaxies e g the Hubble type mainly adapted from UGC ESO and PGC or determined by own estimation Generally types differ between various sources There is a special type for ring galaxies following Thompson T
17. ferent UGC objects which is not necessarily the one which is the easiest to spot i e the tool might give you wrong info In general the catalogi are put together with much care but can t guarantee 100 accuracy The output of this tool is very sensitive to the data put into the tool meaning if you want to be sure check your data Deep Sky Visibility Indicator V1 4 User Manual O N Chapter Annex 3 Note about the catalogi Annex 4 Import function The Import function can be found in the Observation List module The Import function is developed to be able to import data from other tools e g such as Sky Tools The import function reads a semicolon separated file which can be generated by for example Excel The header line of this file will tell the Import function how to interpret the data This is how it will work Generate your data using for example Excel in a simple straight forward way see example below Gal Arp299 IC 694 UMa 11h28m30 58 3343 11 7 1 2 x 0 8 Gal IC 691 UGC 6447 UMa 11h26m44 2 59 0920 13 33 x 23 Gal NGC 3893 UGC 6778 UMa 11h48m38 4 48 42 34 10 8 3 1 x 1 6 Gal NGC 4181 MCG 9 20 111 UMa 12h12m49 C 5254 12 14 7 5 8 Now add an header line the Import function will recognize and the Excel file will look as follows make sure you start at Row 1 and in Column A so in this example the word Type is in cell A1 Type Object Reference Const RA DEC M Size Gal Arp 299 IC694 UMa
18. function the Visibility Graph is shown the Object Selector will still show you the originally selected object When you press the Copy to Object Selector button the object will be copied to the object selector Be mind full that the Visibility Graph might alter at this point The reason for this being that the initial Visibility Calculation is done on the original data from the catalogue When pushing the Copy to Object Selector button the program will use the NGC IC or UGC data if available which can differ from the original data from the selected object Deep Sky Visibility Indicator V1 4 User Manual O he Chapter How to operate the tool From the Observation List you can go to the Routing Graph The Routing Graph is a really powerful tool and gives a graphical representation of the current Observation List It makes it easy to sport any irregularities in the Observation List The Routing Graph has the option to optimize the route simply by pushing the Optimize Route button you will find on the graph The algorithm being used is a so called Shortest Path First algorithm By definition this algorithm will not always find the shortest route more complex algorithms are out of my league in terms of my visual basic knowledge When the route have been optimized you can reverse the route this might come in handy to follow the right direction or for example to have more difficult to spot objects nearby the end of your observat
19. ion session From the Routing Graph you can go back to the Observation List or Catalogue by using the respective GoTo buttons Observation Routing Graph route length 323 41 46 Right Ascension 25 00 20 00 15 00 10 00 5 00 40 00 gt 30 00 HME M Messier 1 END 20 00 10 00 M 26 Aqr START M Messier5 M Messier2 Dec Messier10 10 00 M Messier9 20 00 M MessierB M Messier4 30 00 M Messier amp M Messier7 40 00 There are various entry points into the catalogue You can jump directly to the catalogue from the Visibility Calculation window or from the Observation List or alternatively you can use the Find Closeby feature found in the Observation List window From the Catalogue you can directly jump to the Visibility Calculation Observation List or Routing Graph by using the respective GoTo button Deep Sky Visibility Indicator V1 4 User Manual How to operate the tool The Catalogue will always show nearby objects around a selected object from the observation list This object is displayed in the upper right hand corner In the upper left hand corner you will see which area around the selected object is shown 15 x15 30 x30 1x1 2x2 4x4 8x8 degrees or the whole catalogue is show indicated by Show All This can be altered using the buttons on the upper left hand side of the screen By using the drop down boxes Const Constellation and or Catalogue
20. l o Chapter How to operate the tool I believe this is a really neat feature The object will be shown in the blue box click the X in the upper right hand corner to remove the box The basic functionality for managing observation lists was added in version 1 2 The button Add to Observation List will add the given object from the OBJECT SELECTOR to the end of the current Observation list Be careful this is not always the object shown in the right hand graph on that page For more about observation lists see section Managing Observation Lists The button GoTo Observation List will bring you to the observation list and finally the button GoTo Catalogue will jump to the catalogue The Store Defaults button will store the DIAM LM and SBo values so next time you open DVI those values will be restored When pushing the GoTo Visibility Surface button in the graph will bring you to the Visibility Surface which is explained in the next paragraph Finally the Exit button exits the program a Deep Sky Visibility Indicator source STScI Digilized Sky Survey llle Loo enim Messier 31 lt click picture to close Figure 3 Image window Deep Sky Visibility Indicator V1 4 User Manual N Chapter How to operate the tool Visibility Surface Now when preparing your observations you probably don t know exactly what the seeing sky quality will be in advance The Visibility Surface will give you
21. lity requiring more explanation as mentioned above is Add Reset This functionality can be used to calibrate setting circles or re init GoTo sysems to ensure the Deep Sky object will be seen in your Field of View It works as follows What it will do is look for nearby stars initially 2 degrees from the Yale Bright Star Catalogue to the Deep Sky object selected If no nearby Bright Star can be found there is an option to look in a 4x4 or even 8x8 degrees area When too many stars are listed the list can be narrowed down to an 30 x30 or 1x1 degrees area around the selected object In the list select an appropriate star and push the select button The selected star will be added to your observation list before the object selected Export Generate Scroll File This will generate a scroll file for Mel Bartels system with the scr extension People who use that system will understand it Optionally in the future more file generation can be added to the tool if you do have requests in that area please see section Annex 5 Suggestions feedback and distribution list Import The import function is developed to be able to import data from other tools e g such as Sky Tools The import function reads a semicolon separated file which can be generated by for example Excel The header line of this file will tell the Import function how to interpret the data See for a full explanation Annex 4 Import Function When you use this
22. m an existing observation list in the Observation List window Simply open an Observation list and push the button Add to observed list and the selected object will be added to the Observation Database The following screen will be shown Deep Sky Visibility Indicator Observation Record a cx Observation Record Defaults Object Name Messier 86 Constellation VIR Location Breezanddijk afsluitdijk Date dd mm yyyy SQM LM Seeing A0 1 10 Time hh mm Instrument 12 Computerized Dob Eye Piece 40mm Vixen NLV Magnification Observation OK Cancel Figure 6 Add Observation Record Some object and other details are already pre populated on your screen but can be modified With the Browse button and image e g a scanned drawing can be added to the Database as well However before doing this it is advised to create your Observation locations Instruments Eye pieces and used Filters in the Database This is done by selecting the Defaults tab when the Add to observed list button has been pushed Deep Sky Visibility Indicator V1 4 User Manual WwW e Chapter How to operate the tool The following buttons can be found in the Observation Record window Add Observation Will add an observation record but the record will not be pre populated with object details It is therefore advised to use the Add to observed list button in the Observation List window Delete Obse
23. n external tool and import data into this tool e Add a couple of initial objects to the observation list and complement the list e Create an observation list by selecting objects in a certain constellation There are obviously more ways but to aid the beginner will be outlining the above mentioned methods in a wee bit more detail using DVI Using an external tool When using an external tool to generate observation lists the assumption is that the visibility of the objects is already verified in the external tool If not this program enables you to verify it once more once the data is imported Step 1 Import the data using the import function see for a full explanation of the import function Annex 4 Step 2 Verify that the data import was done correctly Step3 Ifrequired add objects using the Find CloseBy function Step4 Look at the Routing Graph to verify if you re happy with the routing and if not use Optimize Route to optimize the routing Step5 Ifyou need to align reinitialize your GoTo system or setting circles add Reset Stars at required intervals Step6 Save and if required print your observation list Step 7 When using Mel Bartels GoTo system generate a scroll file Add a couple of initial objects People using a simple stellarium program might have an idea of some objects in the same vicinity they might wish to observe This workflow will help those to optimize their observation lists Step 1 Using the O
24. n of SBO using LM Limited SBO to 22 0 in Visibility Surface Added functionality for creation of observation lists and related features Generate Scroll files for Mel Bartels Scope exe Introduced Jan van Gastel s formula to translate LM into SB Added Routing Graph and Route Optimization routines Enhanced Observation List creation options including Closeby selection options Import functionality Enhanced user interface Added BOC Bright Object Catalogue www astroforum nl Added functionality to keep track of observed objects Improved Show Object image capability with inverse and print functionality Added Finder Chart function with print functionality When different objects in an observation list have a RA East AND West of 0 00 00 then the graph and Optimize Route won t work properly but result is still acceptable I think Filter functionality in observed list for date fields will only work properly when using gt u gt lt and lt operators Image and Finder chart ViewObject needs to be closed before opening another Image or Finder chart Suggestions feedback and distribution list If you have any suggestions for improvements found bugs wish to add certain catalogues or features if you want to be on the distribution list for updates or simply have feedback for me Please mail mmaters zonnet nl Deep Sky Visibility Indicator V1 4 User Manual BN Chapter Annex 7 R
25. ns can be found Delete Item Will delete the item on the selected item from the list Move Up Dwn Will move the selected item up down in the list Reverse Route Puts the observation list in reverse order might come in handy when you did a route optimization On the upper right hand side the so called GoTo buttons can be found those buttons will bring you to the respective part of the program Last but not least in the centre section just above the actual observation list the following button can be found Deep Sky Visibility Indicator V1 4 User Manual O Chapter How to operate the tool Image Shows an image of the selected object for detail refer to page 5 Finder Creates a Finder Chart for the selected object for detail refer to page 5 Visibility Calc Does a visibility calculation of the selected object Find CloseBy Jumps to the catalogue and will show you the Deep Sky objects in the close neighborhood of the selected object See section Catalogue for a more details description of the features Add Manually Gives you the option to manually add objects to your observation list Limited error checking on the input variables is done Add Reset Adds a Reset Star to the observation list for a more detailed explanation see the section below Add to observed list Will add the selected object to the observation Database In the section Observation Records this functionality will be explained in detail The functiona
26. rvation Will delete the selected observation record Modify Observation Enables you to modify an existing observation record Print Will print the list to the default printer Show Image Will show the image if an image is attached to the observation record Select View Enables you to filter the list based on Object Name Constellation Date Location and Instrument and wildcard characters are allowed n de n c n c sz will also work The Date field in the filter Operators such as will not accept plain dies eine one of the above mentioned operators This is unfortunate but due to the excel annotation of date formats When for example the data 5 of may 2010 needs to be selected you need to enter this as follows Deep Sky Visibility Indicator Select View Ww a Xl Object Name Constellation Date Location Instrument gt 05 05 2010 and C or and C or and 06 05 2010 Clear View Cancel GoTo Observation List Will Go to the Observation List window Exit Will exit Deep Sky Visibility Indicator Ss he Chapter How to operate the tool Deep Sky Visibility Indicator V1 4 User Manual Workflow have added this section to outline how I m using my own tool Perhaps this section is superfluous but thought that this may be handy anyway for the beginning observer In my mind there are various ways to generate effective efficient observation lists e Use a
27. sier 64 6 4 2010 Bussumerheide Huiz Computerized Dob 40mm Vixen NLV Niet verwacht toch gezien lijkt of er een duidelijke verdonkering in het midden waarneembaar is Messier85 6 4 2010 i Bussumerheide Huiz Computerized Dob 40mm Vixen NLV Laatste gezien in COM M100 99 88 en 91 waren niet zichtbaar Messier66 6 4 2010 Bussumerheide Huiz Computerized Dob 40mm Vixen NLV Gezien 16 Messier65 6 4 2010 i Bussumerheide Huiz Computerized Dob 40mm Vixen NLV Gezien Messier 105 6 4 2010 Bussumerheide Huiz Computerized Dob 40mm Vixen NLV Gezien Messier 96 6 4 2010 Bussumerheide Huiz Computerized Dob 40mm Vixen NLV Gezien Messier 40 6 4 2010 Bussumerheide Huiz Computerized Dob 40mm Vixen NLV Toch gezien nu ik het plaatje erbij heb gezien Vraag me echter af wat hier nu zo bijzonder aan is Mis ik details Ty DVI VI S USER MAN ff Deep Sky Visibility I EN Martins Werkbalk lt WE 15 45 There is only one entry point to the Observation Record window and that is through the Observation List window Use the GoTo Observed List button to go to the Observation Record Database The GoTo Visibility Calc button will simply GO to this window the Visibility Calc button will go there as well but will also show a visibility calculation of the selected object Deep Sky Visibility Indicator V1 4 User Manual N e Chapter How to operate the tool Normally observation records are added fro
28. t of the popular planning programs e DVI enables you to study the visibility of Deep sky objects for your night sky conditions in detail e DVI enables you to generate GoTo system specific output files currently only for Mel Bartels system but more can be build on request saving you considerable time and avoiding typing errors New features in release 1 4 are e Administer the objects you have observed in the database e Create show and print finder charts e Show and print images of the objects But more about the above mentioned functionality later on in this document The tool contains 9 catalogues with over 28 000 deep sky objects The catalogues included are Messier NGC IC Caldwell ARP Herschel 400 UGC Abell and finally BOC The Bright Object Catalogue from www AstroForum nl Have fun using it Deep Sky Visibility Indicator V1 4 User Manual D Chapter Introduction How to operate the tool believe the tool is pretty self explanatory The most important parameter to fill out is the DIAM eter of your telescope in millimeters if you only know it in inch simply multiply this value by 25 4 on top of the opening page You can store this value as your default with the Store Defaults button on that page Only the cells in MEDIUM BLUE should be altered To read section 4 Workflow might be helpful to start using the tool Visibility Calculation and Visibility Surface Visibility Calculation
29. to your observation list If needed check the visibility first using the Visibility Calc button Repeat step 3 for other catalogues if required If required go back to step 2 and select a constellation next to the previous one you used From this point onwards follow steps 3 until 7 in the previous workflow Using an external too Deep Sky Visibility Indicator V1 4 User Manual O T Chapter Workflow Module Structure The diagram below gives a graphical representation of how you can move back and forth between the different modules This to aid the user to understand how one can move through the program Visibility Surface Observation Records edel Observation Calculation DET incl Object Selector Image amp Finder Routing Graph Catalogue N e Chapter Module Structure Deep Sky Visibility Indicator V1 4 User Manual Annex 1 Limiting Magnitude and Sky Background Brightness Over the past couple of years there has been much debate about the Sky Background Brightness SBo and the translation from Limiting Magnitude LM to Sky Background Brightness believe the consensus reached in the end is that the maximum Sky Background Brightness equals 22 0 mag arcsec Hence the Visibility Surface diagram will stop at that point Now the other relevant reference to consider is what LM will the average observer be able to see at this darkest possible point Although I m not convinced there is cons
30. ypes for open clusters are included according to Tr mpler s classification For globular clusters the concentration class l XII is given Type Explanation 2 Grp Star double star star group asterism C D E 1 P S Galaxy compact dwarf elliptical irregular peculiar spiral d dwarf B bar R ring M mixed other letters from Hubble type or its extensions R PRG Ring galaxy see 30 Polar ring galaxy GxyP Part of galaxy e g bright HII region OCL Open cluster if no Tr mpler class is available GCL Globular cluster if no concentration class is available DN EN RN PN Nebula dark emission reflection planetary SNR Supernova remnant GX Galaxy NF Not found Deep Sky Visibility Indicator V1 4 User Manual O e Chapter Annex 2 Explanation of the field Type in the catalogue Annex 3 Note about the catalogi I ve included the following catalogi in the object selector Messier Caldwell NGC IC Herschel400 ARP UGC Abell Planetaries and BOC Bright Object Catalogue of Astroforum www astroforum nl find the NGC IC and UGC catalogi use the most accurate so if there is a reference from one of the catalogi to the NGC IC or UGC catalogue the tool will use the data from those Special attention for the ARP catalogue the tool will only show the data for the object with the lowest magnitude sometimes ARP object consist for example of 3 dif
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