README web version of /home/usg/OPS/MTS/readme_xml/readme_81030001

Principal Investigator Email Address

• nardetto@mpifr-bonn.mpg.de

Estimated Total Execution Time (hours, including overheads)

• 1h

General Description

• This program is a spectroscopic support to interferometric observations
   of X Sgr with AMBER/VLTI (081.D-0300(B)).
  We need simultaneous observations of X Sgr with CRIRES and AMBER instruments, where
   "simultaneous" means in the same night (see "Time-Critical Aspects"). We need in
   total four measurements corresponding to different pulsation phases of the star.
   
  
  For these four OBs, we use the high-resolution mode of CRIRES (R=100000, slit width=0.2")
   around the Brackett gamma line (2165.5nm) considering one "free" wavelength setting
   (wavelength reference = 2192 nm, see Waiver request).  We are interested also by
   four metallic lines : SiI 2.1777, SiI 2.1822, SiI 2.1879 (within the AMBER K band
   wavelength range) and SiI 2.2062 (not observable with AMBER). Observations are without
   AO.

Waiver Requests

• We need a spectral range which (1) cover as much as possible the AMBER
   wavelength range (21500-21950A)
  (2) which includes the Brackett gamma libe and our metallic lines (see general description).
   
  As we have only 1h for four measurements, two standart wavelength settings are not
   possible.
  We found that the free wavelength setting (2192nm) satisfies our contraints. This
   waiver request was accepted. 
  Note that the systematic radial velocity of X Sgr is 25km/s (+-2A), which is negligible.

Critical Observing Condition Constraints

• No critical Observing Condition constraints

Time-Critical Aspects

• We need four measurements corresponding to four pulsations phase of X
   Sgr
  This has to be done SIMULTANEOUSLY WITH AMBER observations (see 081.D-0300(A)).
   "Simultaneous" means in the same night. 
  On a pratical point of view, it was not possible to indicate this in the "Time Intervals"
   Section. We thus indicate it in the "User Comments" section.

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?

• N/A