README web version of /home/usg/OPS/MTS/readme_xml/readme_83089300

Principal Investigator Email Address

• Avi.Mandell@nasa.gov

Estimated Total Execution Time (hours, including overheads)

• 9.61

General Description

• The science targets are AS205 and S CrA; both targets will be observed
   using two grating settings (reference frequencies of 3400 nm and 3505 nm).  In addition,
   OBs for two calibration stars (one for each science target) are included as well
   - BS6378 (A2IV) is the calibration star for AS205, and BS7121 (B2V) is the calibration
   start for S CrA (the required range for calibration stars is B1-A3).  S/N of at
   least 1000 is required for all targets, both science and calibration; however, exposure
   times are calculated for S/N ~ 1200.  The calibration star should be observed as
   close in time to the associated science target, preferrably without moving the grating
   position.
  
  Note:  All the stars are binaries (including the calibration stars).  For each target,
   please center the slit on the brightest component of the binary pair.  We have chosen
   ELEV for the derotator mode due to problems with guiding at the high airmass; please
   be careful to center on the brightest component of each binary only because we will
   not be including both components in the slit.
  
  
  VERY IMPORTANT: DURING NORMAL DAYTIME CALIBRATION OBSERVATIONS, PLEASE TAKE HIGH
   S/N FLATS!!  We don't want to be limited by the flat field noise, so we would like
   to reach S/N of 2000 on the flats for each setting.  This would require ~120 flat
   exposures at ~4000 count level.  If this is not possible, please take at least 60
   exposures, at a minimum, for each setting.

Waiver Requests

• Our Waiver Request asking for execution times of ~1.1 and 2.2h for our
   science targets was approved; notification was from Michael Hilker, ESO User Support
   Department.
  
  Our Waiver Request asking permission to use two free wavelength settings was approved;
   notification was from Michael Hilker, ESO User Support Department.

Critical Observing Condition Constraints

• Note:  All the stars are binaries (including the calibration stars). 
   For each target, please center the slit on the brightest component of the binary
   pair.  We have chosen ELEV for the derotator mode due to the high airmasses for
   the targets, please be careful to center on the brightest object only because we
   will not be including both stars in the slit.
  
  Please wait to observe the targets until the forecast suggests favorable conditions
   for the required length of time.

Time-Critical Aspects

• We would like to have highest radial velocity shift possible for the two
   science stars; therefore, observing them as early in the observing semester as possible
   is desired.  Please observe AS205 during the month of April; please observe S CrA
   between April 15th and the end of May.

Special Execution Requirements

• The calibration star should be observed as close in time to the associated
   science target, preferrably without moving the grating position.
  
  Note:  All the stars are binaries (including the calibration stars).  For each target,
   please center the slit on the brightest component of the binary pair.  We have chosen
   ELEV for the derotator mode due to the high airmasses for the targets, please be
   careful to center on the brightest object only because we will not be including
   both stars in the slit.
  
  VERY IMPORTANT: DURING NORMAL DAYTIME CALIBRATION OBSERVATIONS, PLEASE TAKE HIGH
   S/N FLATS!!  We don't want to be limited by the flat field noise, so we would like
   to reach S/N of 2000 on the flats for each setting.  This would require ~120 flat
   exposures at ~4000 count level.  If this is not possible, please take at least 60
   exposures, at a minimum, for each setting.

Special Calibration Information

• VERY IMPORTANT: DURING NORMAL DAYTIME CALIBRATION OBSERVATIONS, PLEASE
   TAKE HIGH S/N FLATS!!  We don't want to be limited by the flat field noise, so we
   would like to reach S/N of 2000 on the flats for each setting.  This would require
   ~120 flat exposures at ~4000 count level.  If this is not possible, please take
   at least 60 exposures, at a minimum, for each setting.

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