README web version of /home/usg/OPS/MTS/readme_xml/readme_77000601

Principal Investigator Email Address

• dmackey@ast.cam.ac.uk

Estimated Total Execution Time (hours, including overheads)

• 00:59:46 hours

General Description

• ** These observations are designed to help detect high proper motion stars
   in the core of the globular cluster 
  NGC 288. As such they simply consist of several sequences of repeated jitters in
   the H band. The first sequence is of short DITs, designed to cover the brightest
   stars in the field, and the next sequences are of longer DITs, designed to reach
   as faint a limit as possible and maximize the stellar sample. The sky is sampled
   in between each set of on-target jitters.
  
  ** With the original OBs submitted for first epoch imaging in P76, problems were
   encountered because the OB was defined using the AutoJitterOffset template with
   a large sky throw (1000\"). Upon returning to source after sampling the sky, the
   AO star was miscentred on the NAOS field of view. To correct this we have re-defined
   the OB using a set of AutoJitter templates on source, separated by GenericOffset
   templates to sample the sky. The idea is to put a pause in the OB execution after
   the return from sky (ie after each GenericOffset template) in order to re-acquire
   the source if needed.
  
  ** Please adjust the specified DIT/NDIT values (if necessary) to stay just below
   the saturation limit. In the short exposures no stars should be saturated; in the
   long exposures it is OK for the brightest stars to be a bit saturated but not massively
   saturated. 
  
  ** The only constraint on the observations is that each star needs to be able to
   be centroided as accurately as possible -- hence our requirement for good seeing
   (better than 0.8\") and no saturation. There are no calibration OBs. The offset
   to sky fields is large (1000\") so that we get away from the crowded central cluster
   regions and out towards the cluster tidal limit. 
  
  ** The brightest object in this field will be the first reference star R1, which
   is a star a magnitude or so below the top of the RGB, with V ~ 14. This corresponds
   approximately to H ~ 10 at brightest.
  
  ** Three finding charts have been provided. One complies with the required NACO
   constraints (ie 2x2' field, etc). The remainder have smaller fields of view, and
   are designed to allow fine centering of the observations. Reference stars are always
   marked, as is the field of the selected S13 camera, the target name, orientation,
   and scale. Please note all finders are labelled with runs from P76 -- 076.D-0458.
   These were the first epoch imaging runs, and have not been changed on the finders
   as it is very time-consuming to redo the finders for this cosmetic correction. Please
   be assured all finders are appropriate for the present runs 077.D-0006.

Waiver Requests

• No Waiver Request was submitted

Critical Observing Condition Constraints

• No critical constraints apart from those listed under the constraint set
   (seeing, transparency, etc).

Time-Critical Aspects

• N/A

Special Execution Requirements

• See "General Description".

Special Calibration Information

• ---(Empty)---

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 ?

• N/A

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

• N/A

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 ?

• N/A

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

If you have PSF reference star OBs, do the names of those OBs begin with
 PSF_ ?

• N/A

If there are Finding Charts attached to your OBs, is the field-of-view
 of at least one of these charts 2' x 2' (with clearly labelled field orientation)
 ?

• YES

Have you clearly marked and labelled your wavefront reference objects
 R1, R2, R3, ... (as specified in the NAOS Preparation Software) on your Finding
 Charts ?

• YES

Have you specified the magnitude of the brightest object in the field-of-view
 for each OB ?

• YES

Are there objects in any of your fields (including standard stars) which
 are brighter than the limits specified in the User Manual and on NACO web Pages
 ?

• NO

If the previous answer is yes, have you given a list of OBs and a justification
 for the brightness limit violation in the general description field ?

• N/A