README web version of /home/usg/OPS/MTS/readme_xml/readme_79034102

Principal Investigator Email Address

• forster@mpe.mpg.de

Estimated Total Execution Time (hours, including overheads)

• 14h20min

General Description

• The main characteristics of the observations are as follows.  - The targets
   have the following priority: early in P79: 1) BzK15504    : 4 OBs later in P79:
   2) K20-ID9     : 3 OBs 3) K20-ID5-ID7 : 1 OB 4) K20-ID8     : 3 OBs - Sensitivity
   is a key parameter for our science goals. It is more important to complete all observations
   for the highest priority target before starting the observations for the next ones,
   in order of priority. - There is no priority among the OBs for a given target. 
   OBs are named after the targets and with "-0", "-1", "-2", etc. appended for different
   OBs. - The NACO pointings have field center coordinates and position angles so as
   to cover the science target and at least one star (including the tip-tilt reference
   star).  This will provide the PSF calibration simultaneously with the science data,
   minimizing overheads associated with PSF calibration. - The NDIT x DIT are either
   4 x 30s or 3 x 45s.  These were chosen so as to avoid saturation of the star in
   each field that we will use for PSF calibration. - The brightest source in each
   field is the tip-tilt star (TTS). - One field includes 2 of our science targets,
   K20 ID5 and ID7. All other fields include only one science target. - The seeing
   constraint is < 0.6" for ID9, ID5/ID7, and ID8, and is < 0.8" for BzK15504.
    This is justified below.  We have had difficulties in the past using STRAP in 0.5"
   seeing conditions - this is a known problem that in good seeing and particularly
   for fainter stars, much of the light goes between the APDs.  To help alleviate this
   potential problem we prefer to relax the seeing constraint for BzK-15504, for which
   the TTS is faint and fairly close to the target (about 17"). For the other targets,
   the TTS is significantly farther away, such that the AO constraint as requested
   in the proposal.  We would also like to note that for K20-ID9, K20-ID5/ID7, and
   K20-ID8, the only TTS's available are rather faint.  We are aware of the possible
   limitations this could have on the AO performance.  Our experience from the NACO+LGSF
   commissioning in January 2007 and from our NACO+LGSF visitor mode run in March 2007
   with TTSs of similar magnitudes and at comparable distances from the science targets
   was successful and provided effective angular resolution of 0.1" - 0.2", which still
   meets our scientific requirements. We are thus confident that these observations
   can be carried out, and if the acquisition presents some difficulties, we would
   like to kindly ask the observers to do their best, or to contact the P.I. if needed.
     Remarks on the finding charts:  - The finding charts are based on deep imaging,
   with limiting magnitudes of Ks(5-sigma, Vega) = 20.8 mag for SOFI map of EIS/Deep3a
   field for BzK15504, and Ks(5-sigma, Vega) = 22.6 mag for ISAAC map of GOODS/CDFS
   field for the other targets. Therefore, to help during the field acquisition, the
   brightest stars (from 2MASS-PSC catalogue with magnitudes in the range K(Vega) =
   13-17 mag) are marked with the star symbols. - In the finding charts, the square
   in thick solid line shows the nominal NACO pointing.  The area outlined with dashed
   squares indicates the
  full region mapped accounting for the jitter box width.

Waiver Requests

• Two Waiver Requests were submitted:  079.A-0341C.01.WAV : for an extension
   of P2PP submission dealine until March 30. 079.A-0341C.02.WAV : for an increase
   of the OB execution time limit to 1h20.  One program change request was submitted:
    USD-19287: for an instrument setup change to include H band for BzK15504
  (submitted on March 30, 2007; Approved on April 03, 2007)

Critical Observing Condition Constraints

• Transparency constraints: - For all OBs, CLEAR sky transparency conditions
   is acceptable.  Moon constraints: - Since our TTSs have V = 16 or fainter, we have
   set the constraints for moon illumination and moon distance to 0.7 and 50 degrees,
   respectively, following the recommendations from the ESO NACO P2PP Web pages (http://www.eso.org/observing/p2pp/NACO/NACO-P2PP.html#Additional2).
    Seeing constraints: - Seeing < 0.8" for BzK15504 to help alleviate the potential
   problem in using STRAP that much of the light falls between APDs in very good seeing
   for faint TTS.  For the other targets, seeing < 0.6" because their TTS is significantly
   farther away so good seeing becomes then more critical given the poorer AO performance
   for larger target-TTS distances (see comments
  in General Description).

Time-Critical Aspects

• None

Special Execution Requirements

• As we explain in the General Description, the targets are prioritized
   and the observations of the higher priority targets should be completed before starting
   on a new target. Priorities are as follows: early in P79: 1) BzK15504    : 4 OBs
   later in P79: 2) K20-ID9     : 3 OBs 3) K20-ID5-ID7 : 1 OB 4) K20-ID8     : 3 OBs
    We have also noted in the General Description that some of our TTSs are rather
   faint.  While from our experience during NACO+LGSF commissioning and GTO run on
   March 25-27, 2007, we are confident the observations can be carried out and meet
   our scientific requirements, please do not hesitate
  to contact the PI in case of difficulties.

Special Calibration Information

• None

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 ?

• 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

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