README web version of /home/usg/OPS/MTS/readme_xml/readme_78046301

Principal Investigator Email Address

• fselman@eso.org

Estimated Total Execution Time (hours, including overheads)

• 6h

General Description

• This is the repetition of a P78 project that got the centering of the
   science targets off. Because 30 Dor can be observed only during the beginning of
   the night I have relaxed some contraints: the 2 position angles of the same target
   same epoch can be observed in two separate nights. The third epoch should be done
   any number of nights after the second epoch OBs.
  
  Because we are late in the season of observability of 30 Doradus please start in
   twilight to get the lowest possible airmass. During the first half of March two
   OBs per night can be observed if observations start early in twilight.
  
  This project aims to study: (1) the presence of binaries in the R136 cluster; and
   (2) after correcting for them determine the velocity dispersion at the center. The
   resolution of the K0.1 mode of SINFONI is barely enough for this project so two
   issues are of paramount importance: maximize the overlap of the fields to get good
   S/N observations for many stars; and do \\\"sub-slit\\\" spatial dithering to \\\"scramble\\\"
   the signal and reduce systematic effects due to uncertainties in the positioning
   of each star within the slit.
  
  
  The observations have been designed to maximize on-target time. There are 4 visits
   to an offset sky position to subtract the major sky contribution per OB. From each
   star we will subtract a local sky after that. I understand the return from sky will
   reposition the field to within 0.1\\\", that is, the spaxel size in the dispersion
   correction. There are three return trips from the sky and we assume that the overlap
   of the fields will be < 0.2\\\".

Waiver Requests

• We have submitted a waiver request for OBs of more than hours duration,
   which was approved.

Critical Observing Condition Constraints

• It is important to maximize overlap of observations of same field. Hopefully
   differences in field position will be smaller than 0.2\\\" total. 
  
  IT IS VERY IMPORTANT TO USE THE PROVIDED REFERENCE STAR. IF IT IS CHANGED THE OFFSETS
   TO THE SCIENCE FIELDS WILL BE WRONG. IF THERE IS ANOTHER MUCH BETTER REFERENCE STAR
   IN THE FIELD I NEED TO KNOW TO CHANGE ITS COORDINATES IN THE OBs.

Time-Critical Aspects

• This is a multi-epoch project. The only time-critical constraints is for
   run A and B to be separated by at least one night; and run (C) to be executed at
   least 1 or 2 nights after that. Although ideally the two position angle OBs should
   be observed during the same night, considering how late we are to observe 30 Dor
   it will be OK to observe them at separate nights

Special Execution Requirements

• Please ensure proper centering of the reference star. Do not change reference
   star before consulting with PI.

Special Calibration Information

• I have not provided telluric standards for this repeat of the run. Please
   choose G2V stars with stdOpsMain tool. Try to ensure deltaAirmass<0.1 and roughly
   in the direction of the science target.

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 ?

• 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 ?

• 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

Did you indicate the magnitude of the brightest object in the field in
 each SINFONI OB?

• YES

If you are using the AO: Did you indicate for every OB the magnitude
 of the guide star, and its distance to the target (if any)?

• YES

If you submitted OBs for standard stars, did you use the provided StandardStar
 templates?

• YES

If you are using a specific offset pattern or position angle: did you
 check carefully the definition in the manual?

• YES

Did you make really sure that none of your OBs ever saturates the detector?

• YES

If you are using the AO: did you enter the correct Strehl Ratio (on-axis,
 K-band) AND the seeing value in the constraint set?

• YES