README web version of /home/usg/OPS/MTS/readme_xml/readme_77023001

Principal Investigator Email Address

• c.g.bassa@astro.uu.nl

Estimated Total Execution Time (hours, including overheads)

• 04:58:40

General Description

• The purpose of this run is to search for the infrared counterpart to a
   millisecond radio pulsar.
  
  The target is located in a crowded field with several very bright stars (the core
   of the globular cluster Terzan 5), some of which are selected as wavefront sensing
   (WFS) stars. The exact JHK magnitudes of these stars are not known, as the values
   from the 2MASS catalog severely suffer from blending of multiple stars. As such,
   these stars may or may not saturate the NACO detector. 
  
  For this reason, we have setup our all OBs in such a way that the bright stars do
   not coincide with the NACO field of view. Please note that these OBs require a rather
   accurate preset of the telescope, as we want the target to be in the NACO field-of-view,
   but the bright stars outside it. The center of the NACO S13 field-of-view is given
   in the findingcharts of these OBs.
  
  According to the 2MASS catalog, the brightest stars in the S13 field-of-view have
   J=9.4, H=7.2 and K=6.6. However, the 2MASS values are severely affected by the crowding
   in the core of the globular cluster, and the positions and magnitudes of these stars
   are unreliable. From a comparison of archival NTT/SOFI images, we find that the
   2MASS stars listed in the S13 field-of-view are all blends of multiple stars and
   as such, the 2MASS magnitudes are severely over estimated.
  
  Because of the uncertainties in the brightness of the stars inside the S13 field-of-view,
   it may be that these OBs cannot be executed in their present form. If it turns out
   that saturation occurs at an unacceptable level in either the acquisition templates
   (with DITs of 0.5s) or in the science templates (with DITs of 10s), then the OB
   must be aborted and both the PI and the USD staff astronomer should be informed.

Waiver Requests

• No Waiver Request was submitted

Critical Observing Condition Constraints

• Besides the constraints set in the OBs, the target is close to ecliptic,
   and we request the observations to be taken with the Moon more than 30 degrees away,
   as suggested in the NACO manual.

Time-Critical Aspects

• N/A

Special Execution Requirements

• N/A

Special Calibration Information

• N/A

ToO Information

• N/A

ToO Activators List

• N/A

Is this a Pre-imaging run ?

• false

Pre-imaging Requirements

• N/A

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