Guidecam User Manual
Contents
1. Doc Version 1 1 ES Guidecam User Manual Released on ae Page 21 of 22 8 2 VISIR VISIR specific acquisition template parameters for IMG Parameter Value TEL ROT OFFANGLE Rotator angle on sky 8 3 HAWK I HAWK I specific acquisition template parameters for non AOF and AOF TTS free Parameter Value TEL TARG OFFSETALPHA Offset in RA in arcsec TEL TARG OFFSETDELTA Offset in Dec in arcsec TEL ROT OFFANGLE Rotator angle on sky HAWK I specific acquisition template parameters for AOF Parameter Value TEL GS2 ALPHA guide probe backup RA coordinate TEL GS2 DELTA guide probe backup DEC coordinate TEL TTS1 ALPHA RA of the TT star 1 TEL TTS1 DELTA DEC of the TT star 1 TEL TTS2 ALPHA RA of the TT star 2 TEL TTS2 DELTA DEC of the TT star 2 TEL ROT1 OFFANGLE Position Angle on Sky deg w r t TTS1 TEL ROT2 OFFANGLE Position Angle on Sky deg w r t TTS2 TEL TARG OFFSETALPHA1 Alpha offset for target w r t TTS1 TEL TARG OFFSETDELTA1 Delta offset for target w r t TTS1 TEL TARG OFFSETALPHA2 Alpha offset for target w r t TTS2 TEL TARG OFFSETDELTA2 Delta offset for target w r t TTS2 TEL TTS1 RMAG R mag of the TT star 1 Document Classification ESO Internal ES O Guidecam User Manual Doc Number ESO 258369 Doc Version 1 1 Released on Page 22 of 22 TEL TTS1 RCOLOR R I color2. and Create will become enabled You can check how the FC will look like by pressing the Preview button In general the created FC will contain the current content of the Aladin sky view window An exception to this is VIMOS pre imaging for which the FC will always be centered in the telescope center and display the whole FOV of the telescope with the guide probe clearly shown see example in Figure 9 To send a FC to an OB check that the Send to P2PP box is checked Document Classification ESO Internal Doc Number ESO 258369 Doc Version 1 1 Guidecam User Manual Released on Page 13 of 22 60 A 9252 3 Guide star pp PAPP tutorial account __RA 05 59 56 051 PRE_VIMOS ZE De 00 13 47 607 550nm ie PPOS NEG a B on 90 0 Kl Ksch Figure 9 Example of a VIMOS pre imaging finding chart generated with GUCT Some good to know reminders e Check that you have the correct OB highlighted in P2PP when sending the FC from GUCT to P2PP A finding chart cannot be send to the wrong instrument but it could be send to the wrong instrument mode e FC names must be unique It is not allowed to attach an additional FC to an OB if a FC with identical name is already attached to the same OB e Finding Charts are attached and added sequentially to one and the same OB as often as they are created and send by GUCT to the same OB although the maximum current limit is 5 FCs per OB Attention if y
3. with some instrument specific features the instrument field of view in yellow the un vignetted and 10 vignetted telescope fields of view in green and red respectively and the guide probe rail in cyan Fetch OB info from P2PP gt amp Location x Frame _ICRS D er DSS SDSS 2MASS WISE GALEX PLANCK AKARI XMM Fermi Simbad NED Instrument VIMOS Mode PRE Target field center Object NGC2627 RA 08 37 15 000 Dec 29 57 17 999 Rotation Ch 90 0 PA S d suuFoV as E TeIFOV Go MA viTGuidestars PMFilterGS Z am MagFilterGS 2B Catalogcs Des o Point Telescope Update View Tool Science target Pointer Circle Offset RA 0 Dec 0 Update Selected target RA 08 37 15 000 Dec 29 57 17 999 Save finding chart d c 2014 UDS CNRS by CDS Distributed under GNU GPL v3 Osel 1330 src 67fps 23Mb Figure 2 The VIMOS imaging FoV outlined in yellow superimposed on the DSS image shown in the Aladin sky view In red is the radius corresponding to the maximum search radius for suitable guides stars which are indicated in cyan The example in Figure 2 is for VIMOS in imaging mode pointing to the Galactic star cluster NGC 2627 The target is located by default at the center of the field and shown as a yellow circle Besides the instrument field of view can be rotated using the rotation slider of the GUCT control panel the resolution is 0 1 degrees
4. 0 03 22 xl Fame RS P en Instrument MAMOS DSS SDSS 2MASS WISE GALEX PLANCK AKARI XMM Fermi Simbad NED WO Mode IMG Da Instru 4 InstruFoV Target field center M TelFov pan A VLT GuideStars Object NGC2627 S e pMFitercs RA 08 37 15 000 Dec 29 57 17 999 ist cont MagFilterGS 2 Catalogcs Rotation 0 7 ie Des o Point Telescope Update View 2 E A Tool VLT guide stars iy ax EEN Magnitude filter A E er Min 11 Max 13 5 Refresh E Selected star tross RA 08 36 27 998 Dec 30 03 22 219 Add Show proper motion Alternate probe position 08 37 03 04 29 58 18 0 1 21 x 40 69 RA Dec Pos amp ee 1 322A out DEJ2000 deg Mean declination ICRS Ep J2000 2 search f Move Up y UCAC4 RAJ2000 DEJ2000 epes f maq o db pmRA pmDE Jmaq Move Down DI WizieRi 390 049599 129 1166612 30 0561720 31 11 32401 34 1 3 7 9 9 440 8 7591 Kmag fren ven rmag imag HA 2 583 11 468 11 103 10 745 0 2 Remove Save finding chart UCD pos eq dec 1 sel 1330 src 211Mb BR Figure 3 Example of Guide Star selection The guide probe GP shadow and the GP rail are indicated in cyan The magnitude range of the shown GSs can be controlled via the Magnitude filter in the control panel Once a suitable GS has been identified the selection of the GS is finalized by pressing the Add button next to the logged RA Dec coordinate of the GS in the GUTC control panel The GS c
5. 11 arcminutes To the extent this is possible stars brighter than 13 5mag should be chosen Stars close to the center of the field without causing vignetting are preferred Too bright objects may result in poorer correction as well How do you actually chose a GS Simply select with a mouse click the desired GS and the projected shadow of the telescope Guide Probe GP onto the telescope focal plane will show up as illustrated in Figure 3 Note the selection of a guide star is only possible if the select button is on in the right hand side of the Aladin window see Figure 4 Also note that the selection is effective only when the mouse pointer turns into a hand symbol it might be necessary to zoom in a bit The selected star will blink Its coordinates magnitudes at different filters proper motion etc are reported in the bottom part of the Aladin window The GP can be positioned on a given guide star in 2 positions called positive and negative POS and NEG The latter is referenced to as alternate position By selecting the corresponding button Alternate probe position in the GUCT control panel the probe will be positioned on the same star on its alternate position This option may allow to reduce or even remove the vignetting that may be present in the other position Vignetting of the instrument FoV occurs whenever the GP shadow intercepts the instrument FoV yellow rectangles Fetch OB info from P2PP a Location 08 36 28
6. 7 4 3 Science target selection geegent 9 4 4 Reference star s selection c ee eeeeeeeeecee eee eeeeeeeeeee scene neeeenaaeeeeeeeeeenteeeeaeaeeeeeeenenees 9 4 5 Offset lst ssrdsn ies a kee Ee Ek ANA Eengel 10 4 6 Jgter BOX sorsia ENKEN SEENEN TENE EENE OE REA EE EEN 11 4 7 Finding chart FC generation EE 11 Sa interface With P2PP ensena re eE eE era aaen ea PPA Er NEE 13 6 Instrument specific features cece cece cece ceeeeeeeeeeeeeeeeeeeeeeceeeeeeeceeeeeeeeeeseeeeteeenetenees 15 6 1 VIMOS oorsese npt a e Ged E a r a dapa ese a nia 15 6 1 1 IMG and PRE E 15 e E TEE 15 MSP EE Ee eech 16 6 2 VISIR seanoa R T E aa a E EE DEAE 17 CNN TE 18 022 SPEC EE 18 6 3 OR 18 6 3 1 Non AOF EE 18 6 3 2 AOF T T Stree rarer a E E E a e e aE 18 EE EE 18 6 3 4 POMMIMG EE ee 19 7 Keyboard SNOrtcut ccccecccecncneceneeeeeeneceeeeeeeneeeceseceeseeseneeeeeneeseeeeseeseeeeeeeeeeneeeenseteeeegs 19 8 List of keywords passed to PAP EE 20 81 VIMOS ET 20 2 eene eebe Ee ee Eeer 21 Ee 21 Document Classification ESO Internal Doc Number ESO 258369 Doc Version 1 1 Guidecam User Manual Released on Page 4 of 22 1 Scope This document introduces the use of the Unified GuideCam tool a Java based observation preparation tool that aims to unify as many as possible potentially all ESO VLT instrument specific preparation tools in just one tool the unified GuideCam tool The first public version of the unified GuideC
7. Figure 6 Sending the list of offsets to the respective instrument science template of the OB is currently not possible Therefore it is recommended to take note of the offsets and insert them manually into the science template of the actual OB dont forget to chose in the OB the same offset coordinate system SKY or DETECTOR as you have selected in GUCT Document Classification ESO Internal Doc Number ESO 258369 Doc Version 1 1 ES Guidecam User Manual Released on a Page 11 of 22 Tool Offsets Coordinates Sky Detector New Offset RA 200 Dec 0 Add og Move Up Move Down Remove Apply Current offset RA 0 Dec 0 Clear Figure 6 Example of offset list 4 6 Jitter Box All instruments except VIMOS Using the Tool pull down menu one can select the Jitter Box tab This feature intends to show the user the maximum spatial extent i e the borders of the box within which a science image could fall if a jitter box is specified in a science template of an OB To display the jitter box in the Aladin sky view window check the Show jitter box check box A big yellow square surrounding the instrument FOV HAWK I FOV in case of the example in Figure 7 is the final area covered by the observation Figure 7 a Tool Jitter box v Show Jitter Box Jitter box size 60 0 Update Figure 7 Example of a jitter box exterior yellow box of 60arcsec around
8. commissioning and HAWK I GRAAL will be offered only later 6 3 1 Non AOF This is the straightforward imaging mode of HAWK I without any adaptive optics support please see details in AD1 The selection of a GS is optional GUCT efficiently supports the observing preparation by allowing the user to check the field positions of any planned offsets use the Offsets tab in the Tool drop down menu of the GUCT control window HAWK I service mode users should ensure that bright stars saturating the detector won t be present in any of the planned offset positions Furthermore specific to the GUCT HAWK I mode an additional target field offset can be applied to the target field center and displayed in the Aladin Sky view see section 6 3 4 6 3 2 AOF TTS free This mode is similar to the Non AOF except that when pointing to a target only candidates outside 8 7 arcmin from the telescope center are shown to avoid vignetting when a laser guide star is going to be used 6 3 3 AOF This mode is not offered yet although it is included in the GuideCam tool It allows to select a TTS besides the GS Document Classification ESO Internal H Doc Number ESO 258369 Doc Version 1 1 ES Guidecam User Manual Released on k Page 19 of 22 6 3 4 Pointing offsets To avoid that the target would fall into the gap between the 4 detectors of HAWK I when presetting the telescope to the target coordinates the HAWK I acquisition templat
9. the OB target RA and DEC coordinates which are the target field center coordinates of GUCT In P2PP select the OB In the GUCT control panel click on Fetch from P2PP the tool will retrieve all relevant information including instrument instrument mode target coordinates PI name OB name Run ID For VIMOS img pre img and pilmos select the GS and the GP position In the GUCT perform all necessary actions to create a finding chart Sect 4 1 to 4 6 and click on Save finding chart The window shown in Figure 8 will pop up with all the relevant information already filled in Run ID and PI Name are read only the OB Name is editable and the Bandpass of the catalog image in use in the present Aladin window must be entered manually The Send to P2PP checkbox is selected Click on Create the finding chart will be attached to the OB in P2PP and all the relevant information will be sent back to the acquisition template See the Appendix for a list of the generic and instrument mode dependent information that are transferred The unified GuideCam Tool exports all relevant parameters entered into the GUCT control panel to the metadata EXIF section of the FC Thereby these data become available to the external verification module EVM in P2PP allowing further automatic checks on the correctness of the OB and the consistency with the FC Document Classification ESO Internal Doc Number ESO 258369 Doc
10. the selection is optional GUCT further allows to visualize the size of a jitter box max 10 arcsec to check if an applied random jitter might cause problems with other bright nearby stars 6 2 2 SPEC In the case of SPEC GUCT will draw the slit selected from the list provided in the Size pull down menu The slit will appear in the Aladin window and is oriented in the North South direction when the position angle on sky is 0 The position angle can be changed with the rotation slider The selection of a GS is optional Jitter is available for this mode although only along the direction of the slit The position of the science target is by default fixed at the slit center hence the science target tab of the Tool menu is disabled If for whatever reason you don t want your science target at the slit center at the start of the acquisition procedure you should specify the appropriate RA Dec coordinate in the GUCT target field center box which corresponds to the slit center 6 3 HAWK I The current version of GUCT supports three different HAWK I modes e Non AOF standard imaging without adaptive optics e AOF adaptive optics assisted imaging e AOF TTS free tip tilt free adaptive optics assisted imaging Two further modes Non AOF fast photometry and AOF fast photometry will be added in future releases The present release of GUCT should be used only for the phase2 preparation of the non AOF mode as the AOF is still under
11. 1 252 8 12 9 14 9 10 384 16 139 11 816 1 Remove Save finding chart Figure 11 Example of the IFU mode The IFU FoV is indicated by the small yellow box located to the West of the telescope FoV center almost on top of the green circle 6 1 3 PILMOS Users who want to take advantage of the pre imagingless MOS mode should use the PILMOS application which is now incorporated in the unified GuideCam tool PILMOS has been offered to VIMOS users since June 2012 and allows to create VMMPS compliant catalogues and simulated pre images from user supplied catalogs which then serve as input to the MOS preparation software VMMPS For a full description of PILMOS please see the PILMOS tutorial in the VIMOS User Manual The following webpage http www eso org sci observing phase2 SMGuidelines PILMOS html provides further recommendations and preconditions under which PILMOS can be used Note users who wish to use PILMOS must download and install the GUCT package appropriate for their operating system Supported systems Mac OSX or Linux When you select the mode PILMOS in the GUCT control panel a new tab is available in the Tool pull down menu labelled PILMOS If you select it you will see the PILMOS panel in the control window Figure 12 However before running PILMOS you must select a suitable GS by using the VT Guide stars option under the Tool menu Once the GS has been defined and the associated fin
12. The slider can also be adjusted with the up down or left right arrows The default rotation is 90 deg for all VIMOS modes and 0 deg for HAWK I and VISIR 4 2 Guide star GS selection All instruments Using the Tool pull down menu and selecting the VLT Guide stars tab it is now possible to define one or more telescope guide star s Candidate GSs are drawn from the UCAC4 catalog and shown in the Aladin panel as cyan circles with an arrow indicating the proper motion direction and its length being proportional to the proper motion value The radius of the circle is proportional to the stellar magnitude Proper motion components can be toggled on off by clicking on the PMfilterGS plane on the right hand side of Aladin window By default the displayed GSs are within the magnitude range 11 to 13 5 mag but the range can be changed by editing the magnitude filter min max values in the control Document Classification ESO Internal Doc Number ESO 258369 Doc Version 1 1 ES Guidecam User Manual Released on Page 8 of 22 window see Figure 3 in case the standard mag range does not provide suitable GSs for a certain target field The minimum and maximum permitted values are 10 and 14 With the faintest GSs some degradation of the active optics correction might take place depending on seeing airmass Moon possible extinction by thin cirrus and position of the GS in the field of view vignetting beyond
13. Version 1 1 Guidecam User Manual Released on Page 15 of 22 6 Instrument specific features 6 1 VIMOS The current version of GUCT incorporates four VIMOS modes e imaging IMG e pre imaging PRE e integral field spectroscopy IFU e pre imageless multi object spectroscopy PILMOS Please see AD2 for additional details These modes can be selected using the Mode pull down menu The default mode is PRE Jitter offsets cannot be executed in any VIMOS templates and therefore the Jitter box tab is not available in the Tool drop down menu 6 1 1 IMG and PRE These modes are basically identical from the GUCT point of view The only difference is that in PRE mode the generated finding chart is always centered in the telescope pointing center and displays the whole field of view ensuring that the guideprobe positioning is clearly visible The selection of at least one guide star is mandatory for IMG and PRE imaging VIMOS OBs For PRE imaging the default value of 90 degrees on sky rotation angle must not be modified unless a waiver is requested note for certain declinations also 0 degrees rotation angle is permitted Since the VIMOS acquisition template for IMG and PRE imaging is identical GUCT cannot distinguish between the 2 modes when Fetch from P2PP is executed and by default sets the PRE mode The user has to change it manually to IMG mode when one actually wants to prepare an observation for VIMOS IMG Similarl
14. a HAWK FoV right hand side of the Figure It shows that the 2 bright stars just outside the Southern edge of the field will most likely fall onto the detectors during a jitter offset 4 7 Finding chart FC generation All instruments At the end of the observation preparation with GUCT i e after having completed all the mandatory and desired optional steps described in the previous sections a finding chart should be created for VIMOS imaging pre imaging and PILMOS showing the selected GS the FC creation with GUCT is mandatory In the finding chart metadata GUCT saves the information of the selected GS s coordinates probe position POS or NEG the Document Classification ESO Internal Doc Number ESO 258369 Doc Version 1 1 ES Guidecam User Manual Released on k Page 12 of 22 target field center selected instrument rotation angle and further instrument specific parameters The create finding chart action sends relevant parameters directly to P2PP Therefore in order to benefit from the automatic updating of OB parameters and ensuring the consistency between the attached FC and actual OB content it is highly recommended to have P2PP running and the respective OB highlighted when saving the finding chart in GUCT Generating and saving a FC without interfacing to P2PP is possible but please note that if the FC is then attached to an OB later the automatic fill in of OB parameters or any check on instr
15. am tool is described here and deals with VIMOS VISIR and HAWK I 2 Related Documents 2 1 Applicable Documents The following documents of the exact version shown form part of this document to the extent specified herein In the event of conflict between the documents referenced herein and the content of this document the content of this document shall be considered as superseding AD references shall be specific about which part of the target document is the subject of the reference AD Document Nr Version Document Title Part Section AD1 VLT MAN ESO 3486 HAWKI User Manual AD2 VLT MAN ESO 3509 VIMOS User Manual AD3 VLT MAN ESO 3514 VISIR User Manual 2 2 Reference Documents The following documents of the exact version shown herein are listed as background references only They are not to be construed as a binding complement to the present document RD Nr Document Nr Version Document Title RD1 VLT MAN ESO 14610 3512 VISIR GuideCam User Manual 3 Introduction This document describes the use of the Unified Guidecam tool GUCT GUCT is a highly interactive tool that unifies individual instrument specific phase2 preparation tools which in previous ESO observing periods were offered only as stand alone single tools In the current version GUCT is offered for HAWK I VISIR and VIMOS and replaces and unifies the VISIR specific GuideCam tool the VIMOS specific GuideCam too
16. closest visible star to the IFU center The label given to the reference star shall give the distance in arcsec to the IFU FoV center The requirement of using the DSS is mandatory and motivated by the need to ensure that all the objects in the finding chart can be identified in the Guidecam display used at the telescope Document Classification ESO Internal Doc Number ESO 258369 Doc Version 1 1 E O Guidecam User Manual Released on Page 16 of 22 GuideCamTool 1 0 0 beta4 Aladin v8 0 j Fetch OB info from P2PP ae EP Location x Frame ICRS en Instrument VIMOS D s SDSS 2MASS WISE GALEX PLANCK AKARI XMM Fermi Simbad NED R Mode IFU Size 54 D E InstruFoY Target field center gt TelFov Object M32 pan VLTGuideStars E PMFilterGS RA 00 42 41 824 Dec 40 51 54 609 E cont MagFilterGS 2S CatalogGS Rotation phot Dss o Point Telescope Update View draw prop Tool VLT guide stars tag del zoom Magnitude filter rame ICRS Min 11 Max 13 5 Refresh filter 90 Selected star cross 180 RA 00 44 13 194 Dec 40 54 41 403 Add f 180 Show proper motion Alternate probe position 30 00 43 37 31 40 50 56 6 RA Pos 1 043 x 48 33 00 44 13 1 40 54 41 403 NEG o es a se Move Up grid wink miltiview Search f Move Down v UCAC4 RAJ2000 DEJ2000_ epos f mag o db MRA mDE Jma Bma O Vizier 655 002894 011 0549786 49 9115014 29 1
17. cted it is also possible to select among specific instrument modes Alternatively the instrument and mode can be retrieved from P2PP using the Fetch OB info from P2PP button at the top of the GUCT control panel if P2PP is running and an OB with at least an acquisition template has been defined within P2PP and is selected In the following we describe the main GUCT features offered via the GUCT control panel These features are mostly non instrument specific indicated otherwise 4 1 Telescope pointing All instruments The first step is to point to a target target field on sky This is done either by entering the target coordinates in J2000 and using the format hh mm ss ss and dd mm ss ss in the RA and Dec fields of the Target field center section of the control panel or by writing the Document Classification ESO Internal Doc Number ESO 258369 Doc Version 1 1 ES Guidecam User Manual Released on ag Page 7 of 22 target name in the Object field and pressing enter which will be resolved by Sesame using Simbad NED and VizieR You may also fetch the coordinates from P2PP if you already have an OB with OB target coordinates defined When pressing the Point Telescope Update View button GUCT will download either the respective DSS image in case the selected instrument is VIMOS or the 2MASS image in case of VISIR and HAWK I The image on sky will appear in the Aladin panel together
18. ding chart saved you can proceed with PILMOS In Catalog file upload a contributed catalog that will be passed to PILMOS This catalog should contain at least three columns Object ID RA and Dec but can have additional columns see the PILMOS tutorial of the VIMOS user manual for further information Then in Output directory chose the name of the directory where PILMOS shall save the output simulated pre images and catalogs Finally press Run PILMOS Document Classification ESO Internal Doc Number ESO 258369 Doc Version 1 1 ES Guidecam User Manual Released on Page 17 of 22 Tool PILMOS Catalog file aes Output directory CE Run PILMOS Figure 12 PILMOS panel in the control window Running PILMOS will take a few seconds during which no feedback is given on the screen so please be patient If everything goes smoothly you should get four catalog files named pilmos_B 1_vm_1 cat pilmos_A 2_vm_1 cat pilmos_A 3_vm_1 cat pilmos_B 4_vm_1 cat and four simulated pre images pilmos_B 1_sim_1 fits pilmos_A 2_sim_1 fits pilmos_A 3_sim_1 fits pilmos_B 4_sim_1 fits which can then be used to run VMMPS 6 2 VISIR GUCT supports the two operation modes of VISIR e Imaging IMG e Slit spectroscopy SPEC VISIR is located at the VLT UT3 Cassegrain focus meaning that vignetting is not affecting the GS selection usable area and therefore only the red circle max
19. ence target tab move to Guide star selection tab move to reference star selection tab move to offset tab move to jitter tab oc o 9 o ANT save finding chart Document Classification ESO Internal Doc Number ESO 258369 Doc Version 1 1 Guidecam User Manual Released on Page 20 of 22 8 List of keywords passed to P2PP The Guidecam tool interacts with P2PP and assigns or updates information in the acquisition template of a given OB Some information are instrument mode dependent some others are generic The following information assigned or updated to a selected OB are generic OB level parameters Parameter Value OB name Name as input by user for FC generation Target Right Ascension Target Declination generic acquisition template parameters Parameter Value TEL AG GUIDESTAR SETUPFILE TEL GS1 ALPHA right ascension of 1 guide star TEL GS1 DELTA declination of 1 guide star In the following instrument mode dependent information are provided 8 1 VIMOS VIMOS specific acquisition template parameters for IMG PRE Parameter Value TEL GS1 PPOS Guide probe position POS NEG TEL ROT OFFANGLE Rotator angle on sky VIMOS specific acquisition template parameters for IFU Parameter Value TEL ROT OFFANGLE Rotator angle on sky Document Classification ESO Internal Doc Number ESO 258369
20. es allow to define a pointing offset TEL TARG OFFSETALPHA TEL TARG OFFSETDELTA The GUCT allows the user to apply and check these pointing offsets Figure 13 After the target field coordinates have been entered the pointing offsets should be entered in the fields Offset RA and Offset Dec Upon clicking Point telescope Update View the Aladin sky view will show the HAWK I FoV at the end of the acquisition i e with the pointing offsets applied Note that the offsets are in sky coordinates and in arcseconds same as in the HAWK I acquisition template GUCT sends these target offset parameters to P2PP when the FC is created and attached to the OB Instrument HAWKI n Mode Non AOF Target field center Object NGC 2627 RA 08 37 15 000 Dec 29 57 17 999 Offset RA 100 Offset Dec 50 Rotation 0 0 _Point Telescope Update View _ Figure 13 Example of HAWK I pointing offsets The telescope will perform an offset of 100 arcsec to the East and 50 arcsec to the North after its initial pointing to the coordinates of NGC 2627 7 Keyboard shortcuts Here we provide the list of implemented shortcuts to execute specific commands within the Guidecam tool The keyboard modifier is cmd for OS X and CTRL for Linux These are either displayed by underlining the first command letter or by positioning the mouse on the corresponding tab e E fetch from P2PP point telescope e move to sci
21. imum search radius for guide stars is indicated in the Aladin sky view but not the green circle The selection of a GS for VISIR observations is not mandatory but very useful for the following reasons Because the sky is extremely bright in the mid IR which severely limits the sensitivity plus the VISIR field of view is small VISIR images can often appear empty in short to medium length exposures However objects may become visible in longer ones Combining different exposures taken on different nights may be tricky if a proper astrometric alignment is not carried out Since the overall astrometric accuracy of an image is actually limited by the accuracy of the GS coordinates it is strongly recommended that all OBs of the same field use the same GS in particular for faint objects In addition objects within optically dark molecular clouds may have very few suitable guide stars such that the telescope operator will most likely have to spend some time for searching for a good GS Considerable amount of telescope time will be saved if such cases are identified before an OB is started and an appropriate GS is already specified in the OB Document Classification ESO Internal Doc Number ESO 258369 Doc Version 1 1 ES Guidecam User Manual Released on a Page 18 of 22 6 2 1 IMG In IMG mode once the target has been selected and the field shows up in the Aladin panel one can select a guide star As mentioned above
22. l as well as PILMOS Furthermore GUCT is strongly recommended to be used for HAWK I observation preparation and the creation of finding charts for VIMOS VISIR or HAWK I OBs It is mandatory to use GUCT for the preparation of VIMOS imaging pre imaging and PILMOS OBs The tool uses the Aladin Sky Atlas for the visualization of the telescope and instrument fields Also GUCT can directly interact with P2PP version 3 4 2 or higher Document Classification ESO Internal ES O Doc Number ESO 258369 Doc Version 1 1 Guidecam User Manual Released on Page 5 of 22 in order to attach finding charts to retrieve information on the instrument mode setup or to propagate acquisition template parameters such as guide star coordinates to the OB 3 1 Definitions Acronyms and Abbreviations This document employs several abbreviations and acronyms to refer concisely to an item after it has been introduced The following list is aimed to help the reader in recalling the extended meaning of each short expression AO Adaptive Optics AOF Adaptive Optics Facility Dec Declination FoV Field of View FC Finding Chart GP Guide Probe GS Guide Star GUCT Guide Cam Tool OB Observing Block P2PP Phase 2 Proposal Preparation RA Right Ascension RS Reference Star UCD Unified Content Description VLT Very Large Telescope WFS Wave Front Sensor Document C
23. lassification ESO Internal Doc Number ESO 258369 Doc Version 1 1 Guidecam User Manual Released on Page 6 of 22 4 Start up and common features Using GUCT is relatively simple After download and installation see http www eso org sci observing phase2 SMGuidelines GUCT generic html issue the command GuideCamTool in the bin directory of the GUCT path Figure 1 illustrates the two main panels which pop up 1 the control panel on the left and 2 the Aladin window on the right Fetch OB info from P2PP GF Wy Location x Frame RS D en Instrument VIMOS J DSS SDSS 2MASS WISE GALEX PLANCK AKARI XMM Fermi Simbad NED Mode PRE Bienvenue on Aladin your professional sky Target field center e pra P Object o Discover all RA 00 00 00 000 Dec 00 00 00 000 astror availal Rotation 90 0 z o Compare them with Point Telescope Update View your own data Tool Science target o Prepare your observation missions Pointer Circle d Mode d Offset RA 0 Dec 0 Update Click Selected target RA Dec H Ms 1533 j a KOU f D SG Save finding chart c 2014 UDS CNRS by CDS Distributed under GNU GPL v3 Osel Osrc 37Mb N Figure 1 Guidecam tool components Control window on the left and Aladin window on the right The GUCT control panel allows the user first of all to select an instrument VIMOS VISIR or HAWK I Once an instrument is sele
24. of the TT star 1 TEL TTS1 RADPOS Radial position TTS1 arm TEL TTS2 RMAG R mag of the TT star 2 TEL TTS2 RCOLOR R I color of the TT star 2 TEL TTS2 RADPOS Radial position TTS2 arm Document Classification ESO Internal End of document
25. oordinates and probe position will be added to the GS list An additional alternative GS can be selected The list with max 2 guide stars can also be re ordered The coordinates of the first GS in the list will be transferred to P2PP and automatically Document Classification ESO Internal Doc Number ESO 258369 Doc Version 1 1 Guidecam User Manual Released on Page 9 of 22 filled in to the respective OB acquisition template parameters via the Save finding chart action see Sec 4 7 Both the first and second GS s coordinates are saved in the metadata part of the finding chart sl o o bei gt E gel Sezk 2 EI 3 a D tag Figure 4 Aladin select tool 4 3 Science target selection All instruments except VISIR spec and VIMOS ifu In the control panel use the Tool pull down menu and select the science target tab By default the science target is the center of the chosen instrument FOV target field center and marked with a small yellow circle In case your science target is somewhere else in the field it should be marked with your preferred choice of pointer symbol in either of the two ways e enter an offset pair RA and Dec which is relative to the target field center usually the telescope pointing center and click on the update button This will mark the target but not apply any telescope offsets telescope offsets are discussed in Sec 4 5 Note that the offsets are in sk
26. or remove them Tool Reference stars 4 Selected star RA 08 37 43 266 Dec 01 59 52 089 Label R1 _ Add RA Dec Label 08 37 43 266 29 58 01 337 R1 Move Up Move Down Figure 5 Example of reference star selection 4 5 Offset list All instruments except VISIR Select the offsets tab in the Tool pull down menu control window to enter offsets This will allow you to visualize step by step the offsets that you plan to define in the science template s of the OB It is particularly useful to check for large offsets if any of the shifted target fields will be affected by vignetting from the guide probe arm Offsets must be provided in arcseconds and are entered manually see Figure 6 They can be either in the SKY or DETECTOR coordinate system consistent with the offset convention of the respective instrument The entered offset will appear in the GUCT offset list by clicking on the Add button By convention offsets are always relative to the previous offset To apply an offset and see the instrument FOV shifted in the Aladin window you can either double click on the row in the list or select it and click on Apply the telescope pointing will shift by the corresponding amount in the Aladin sky view window It is possible to re order the offsets list by selecting a row and clicking on Move Up or Move Down To view the original position of the telescope you can click on Clear see
27. ou have changed any settings parameters e g the target field center in your second third FC that you are going to attach to the OB then the OB parameters will also be updated when sending the second third FC to P2PP e GUCT will always save the FC before sending it to P2PP e GUCT creates FCs in JPEG format and with a maximum size of 1MB 5 Interface with P2PP The GuideCam tool can be used in tandem with P2PP version 3 4 2 or higher This is recommended because it minimizes the user s efforts and possible mistakes Figure 10 illustrates how the GuideCam tool is interfaced with P2PP Document Classification ESO Internal Doc Number ESO 258369 Doc Version 1 1 ES Guidecam User Manual Released on a Page 14 of 22 package Data 2 GUCT Architecture iJ P2PP fetch OB info GuidecamTool send finding chart and meta information e PN Investigator create OB fetch OB info from P2PP create finding chart attach finding chart to OB selected in P2PP generate finding chart generate meta information y ge Finding Chart JPG Meta Information Ee Right Ascension Declination Figure 10 Schematic of the unified GuideCam Tool P2PP interface The recommended sequence of actions is as follows In P2PP chose the appropriate run folder and create an OB with at least the acquisition template defined Assign an OB name In P2PP insert
28. t European Organisation for Astronomical Research in the Southern Hemisphere BS Programme VLT Project WP Science Operations Guidecam User Manual Document Number ESO 258369 Document Version 1 1 Document Type Manual MAN Released On 16 6 2015 Prepared by Giovanni Carraro Monika Petr Gotzens Validated by Stephane Brillant Steffen Mieske Approved by Andreas Kaufer ESO Karl Schwarzschild Str 2 85748 Garching bei Munchen Germany Wwww eso org Doc Number ESO 258369 Doc Version 1 1 Guidecam User Manual Released on Page 2 of 22 Authors Name Affiliation G Carraro ESO Chile M Petr Gotzens ESO Garching Change Record from previous Version Affected Section s Changes Reason Remarks Document Classification ESO Internal Doc Number ESO 258369 Doc Version 1 1 Guidecam User Manual Released on Page 3 of 22 Contents Vi SCO PCs sescvewesnsyanvereestvdinns deta dhteet Sen een tees E A tate dtemsmunvvenbennesvkecttvenauvensnnens 4 2 Related Documents EEN 4 2 1 Applicable Documents 4 2 2 Reference Documents 4 Be IMMPOGUCHON 2 ssnin aaa a E EE aE SEEE EEEa EE NKE 4 3 1 Definitions Acronyms and Abbreviations cccccccccscccccccecccececeececeeeeeeeeeeeeeeeeeeeeeess 5 4 Start up and common features 6 4 1 Telescope pointing EEN 6 4 2 Guide star GS selection EE
29. ument consistency will not work To create the FC press Save finding chart at the bottom of the GUCT control window In case you have forgotten to define some mandatory features instrument and mode dependent GUCT will pop up an error message indicating the required action Once all necessary information have been provided a new pop up window will appear Figure 8 e090 Create finding chart Run ID PI Name OB Name Bandpass Save to Users gcarraro fc jpg Send to P2PP Cancel Preview Create Figure 8 Pop up window which prompts the user to insert mandatory information before the FC is created Insert all the requested information these will be saved in the FC metadata and also appear in the Finding Chart upper left corner Alternatively you can have RunlD PI name OB name prefilled if you do a Fetch OB info from P2PP from the GUCT control panel before clicking Save finding chart But be careful in case the OB that is currently highlighted in P2PP does not have the same e g target coordinates as your target field in GUCT or is for a different instrument these parameters settings will get overwritten in GUCT and your preparatory work might be lost So better type in RunID PI name OB name by hand unless you have retrieved these info already at the beginning of your GUCT preparatory work in which case it will appear already filled in When all information are in place the buttons Preview
30. y the default field rotation angle is 9Odegree which should be changed to the desired angle in case of IMG mode 6 1 2 IFU Figure 11 illustrates the GUCT realisation of the IFU mode The target in this case is M32 and the tool points the telescope FOV center such that M32 is in the center of the IFU field of view For VIMOS set at PA 0deg the center of the FoV of the IFU is located approximately 667 arcsec West and 1 6 arcsec South of the telescope field center see Figure 11 and please consult AD2 for more information Again in the GUCT control panel the target field center coordinates correspond to the center of the IFU this is also consistent with the coordinates that should be specified in the VIMOS IFU OB The guide star selection is optional but in case it is specified it is recommended to chose a GS close to the telescope FOV center A potential problem during IFU OB acquisition is that the target to be observed cannot be seen in an acquisition image once the IFU has been deployed In this case the telescope FoV usually helps the operator and or the night astronomer to check whether or not the telescope is presetting to the desired position For this reason it is required to create a 5arcmin x 5arcmin FC based on a DSS view of the field centered on the IFU target coordinates The field of view of the chosen IFU mode is automatically drawn by GUCT on the Aladin sky window Furthermore it is mandatory to mark as a reference star the
31. y coordinates e or click on a specific object or point in the Aladin window The science target s coordinates will appear in the bottom of the UGCT control window and later be saved in the Finding Chart metadata The target can be indicated with a circle arrow slit or resizable box using the pointer pull down menu and will appear in yellow in the Aladin window 4 4 Reference star s selection All instruments A reference star is typically a bright star used for e g blind offsets or for controlling the pointing of the field in case the actual science target is invisible during the acquisition Clearly not all observations have these specific requirements and hence the reference star selection is optional for all instruments To specify a reference star and mark it in a finding chart select the reference star tab from the Tool pull down menu in the control panel Then click on the desired star free selection the coordinates will appear in the control panel The user must then input a label and click on Add The label and the Document Classification ESO Internal Doc Number ESO 258369 Doc Version 1 1 ES Guidecam User Manual Released on ue Page 10 of 22 reference star marked with a circle will appear in red in the Aladin panel see figure 5 the reference star will also appear in the reference star list in the control panel where the user can add up to three reference stars re order
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