README web version of /home/usg/OPS/MTS/readme_xml/readme_84107800

Principal Investigator Email Address

• kraus@sunstel.asu.cas.cz

Estimated Total Execution Time (hours, including overheads)

• 3.7

General Description

• In the present project, our goal is to obtain very-high (~1000) S/N
  K-band spectra of our five program stars. Four stars are located in
  the LMC, while one (S18) is located in the SMC. For the latter, a
  decent airmass can be obtained very early in the semester. Since it is
  also the faintest of our targets, we had to split its observation into
  two OBs so not to exceed the one-hour limit per OB. Thus, in total we
  have defined six Science OBs.
  
  To maximise on-target integration time, we will not take dedicated sky
  frames. Instead, we will extract sky locally from the science
  images. To obtain enough \\\"blank sky\\\" in our science field, and to make
  sure that we avoid bad/dead pixels, we apply following offset
  procedure:
  1. Acquisition and proper centering of the target.
  2. Offset the target into upper left corner of the FOV.
  3. First integration.
  4. Offset the target into the lower right corner of the FOV.
  5. Second integration.
  
  To avoid that the extended wings of the target's PSF come too close to
  the edge of the FOV, which would affect extraction of the spectra,
  offsets will be 2\\\" in both axes throughout (absolute values).
  
  While all our program stars are fainter than K=6 (hence permanent
  detector damage is not an issue), most of them are very bright
  indeed, which leads to a complication with the finding charts: Due to
  heavy saturation, existing 2MASS images are virtually useless.
  
  Therefore, we have blindly specified offsets of 2". It is thus very
  important to properly center the target star before offsetting the
  telescope, to avoid that the wings of the PSF fall outside the FOV.
  
  We have specified this in the Special Execution Requirements. Thank
  you very much for your help!
  
  
  List of targets/ OB-FOV indicating the brightest source in each field:
  
  OB name             K-mag
  -------------------------------
  HD269953             8.0   
  LHA 120-S 12        10.2
  LHA 120-S 134        8.6
  LHA 120-S 73         8.8
  LHA 115-S 18        11.1

Waiver Requests

• No Waiver Request was submitted

Critical Observing Condition Constraints

• none

Time-Critical Aspects

• none

Special Execution Requirements

• Please make sure to properly center the target star in order to avoid
  that the wings of the PSF fall outside the FOV after offsetting the telescope.

Special Calibration Information

• While we do not specify our own standard star for telluric correction,
  we kindly ask the service observer to try and obtain main-sequence B
  star as standard star. The reason is that solar-type stars (and
  cooler) might display non-zero absorption in CO, which could introduce
  artifacts in the data-reduction process. Thank you very much!

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

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)?

• N/A

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

• N/A

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?

• N/A