README web version of /home/usg/OPS/MTS/readme_xml/readme_81052900

Principal Investigator Email Address

• jpott@keck.hawaii.edu

Estimated Total Execution Time (hours, including overheads)

• 1.5hrs

General Description

• Goal: Get visibilities on U-134 and closure phase on the brightest GC
   star GCIRS7\\ If not finding charts are attached there is only one central bright
   source (the brightest in the field) which shall be observed\\ one bright star has
   been defined as fringe finder (name: *_fringfind), to efficiently search for the
   fringe locations in MR-mode if not done before. This OB can be executed, but should
   not be accounted to this programme. the science OB shall be encircled by cal_OBs,
   whereas the 1st OB has on-axis AO guiding, and the second has off-axis AO-guiding
   as the science target has. If time does not permit the second calibration skip it.\\
   The visibility calibratos has the following properties:      *  Name: HD164866
      * Coordinates: 18 04 18.303 -26 59 33.55
      * V magnitude: 9.5
      * K magnitude: 6.5
      * Spectral Type: K1III
      * Uniform Disk (UD) diameter at K, H, J bands with error estimate: 0.4pm0.3
   (spectrl type and lum)

Waiver Requests

• No Waiver Request was submitted

Critical Observing Condition Constraints

• Tight seeing constraints due to faint star AND off-axis coude-AO-guiding.

Time-Critical Aspects

• there are no time critical aspects

Special Execution Requirements

• If possible run the OB with 50ms integration DIT and faint GS option,
   this indicates a closer and slightly fainter star which usually gives better AO
   performance.

Special Calibration Information

• The requested Low-Resolution mode implies short coherence lengths ->
   fringes are most efficiently found if before the run a bright fringe-finder in MR-mode
   is used to locate the fringes, a respective OB has been prepared (*_fringfind).
   The sci_OB shall be encircled by two calibrator measurement of the same star (HD164866)
   and DIT, but one time with on-axis AO, and one time with off-axis-AO similar to
   the SCI-OB. so a CAL-SCI-CAL sequence is requested. If the three observations don't
   fit in the 1.5hr-frame given to this run, the second calibration shall be omitted.\\The
   calibrator information is not in CalVin and therefore given here      *  Name: HD164866
      * Coordinates: 18:04:18.300; -26:59:33.500
      * V magnitude: 9.4
      * K magnitude: 6.5
      * Spectral Type:K1III
      * Uniform Disk (UD) diameter at K, H, J bands with error estimate: 0.4mas+/-0.3mas
   in all three bands
      * Source of diameter estimate: spectrum and luminosity\\   * no source variability
   known

ToO Information

• ---(Empty)---

ToO Activators List

• ---(Empty)---

Is this a Pre-imaging run ?

• false

Pre-imaging Requirements

• ---(Empty)---

Source(s) of Pre-imaging

• ---(Empty)---

Pre-imaging sources not listed above

• ---(Empty)---

Do all your OBs comply with the instrument-specific requirements listed
 on the instrument-specific Phase 2 web page ?

• YES

If this is a pre-imaging run, did you select PRE-IMAGING for the Observing
 Category for each Observing Template ?

• N/A

Do all your finding charts comply with both the general and instrument-specific
 Phase 2 Web Pages ?

• YES

If you submitted OBs for standard stars, did you specify the magnitude
 and spectral type of all standard stars in the OBs ?

• YES

Have you included OBs for any calibrations that you need but which are
 not part of the Calibration Plan ?

• YES

If you are observing Moving Targets, have you attached suitable ephemeris
 files to your OBs?

• N/A

If you have preferences which OBs should be executed first, did you make
 use of the User Priority field in the OBs ?

• YES

If this is a run that requires coordinated observations with other facilities,
 did you give proper instructions in the Time-Critical Aspects Section ?

• N/A

Did you indicate for each science star OB the corresponding calibrator
 star OB (and vice versa) in the 'Instrument Comments' field ?

• YES

Did you check that your chosen calibrator is bright enough for the instrument
 mode used ?

• YES

If you use calibrator stars which are not in the CalVin database, did
 you specify their characteristics in the README file and in the OBs ?

• YES

Do you use the same DIT for pairs of science target and associated calibrator?

• YES

Are the magnitudes of science target and calibrator within +/- 1 mag
 ?

• YES

Did you verify that your coordinates are as accurate as possible (2Mass
 coordinates recommended) and that they include proper motions if available ?

• YES

Did you specify the LST range of the calibrators such that they cover
 the range from 30 min before the start of the LST range of the science target to
 30 min after the end of the LST range of the science target ?

• YES