README web version of /home/usg/OPS/MTS/readme_xml/readme_60906200

Principal Investigator Email Address

• martins@mpe.mpg.de

Estimated Total Execution Time (hours, including overheads)

• 1h00

General Description

• Pistol star in the Quintuplet cluster, Galactic Center.
  This is the most luminous star known in the Galaxy, and possibly the most massive
   (M~150-200 Msun). 
  We want to test the possibility that it is a binary by tracking spectroscopic signatures
   of a companion.
  
  Observation should be done in AO mode, with OB Pistol_NGS (3 settings: 1690, 1737
   and 2156 nm)
  However, the first attempt (SV #1 August 2006) failed due to the difficulty to find/close
   the loop on the faint AO guide star.
  If this happens again, non AO observations are possible with the OB Pistol_noAO.
  ! The region suffers from more than 30 mag of extinction in V ! Hence, the target
   CANNOT be used as AO guide star (too faint). This is also why the R and K band images
   in the finding chart are so different.
  
  standard star: S/N=80 @ 1698.9 nm; SpTyp=B4V, rangs=B1V-B6V

Waiver Requests

• No Waiver Request was submitted

Critical Observing Condition Constraints

• seeing better than ~ 1"

Time-Critical Aspects

• No time critical aspects

Special Execution Requirements

• ---(Empty)---

Special Calibration Information

• ---(Empty)---

ToO Information

• ---(Empty)---

ToO Activators List

• ---(Empty)---

Do the README file and the instrument comments of the telluric stars
 OBs include the required S/N/pixel of the spectrum of the telluric star, its spectral
 type and allowed spectral range?

• YES

Do any OBs include wavelength or flatfield calibrations?

• NO

If you are observing Moving Targets, have you attached suitable ephemeris
 files to your OBs?

• N/A

If the slit viewer guide star is different from the target, are the RA
 and DEC offsets accurate to within 0.05 arcsec and do they take into account the
 relative proper motion between the two objects?

• N/A

If you have preferences which OBs should be executed first for objects
 at similar RA, did you make use of the User Priority field in the OBs?

• YES