README web version of /home/usg/OPS/MTS/readme_xml/readme_79056900

Principal Investigator Email Address

• mkasper@eso.org

Estimated Total Execution Time (hours, including overheads)

• 2.36h

General Description

• High resolution spectroscopy of the M8/T6 binary SCR 1845. The binary
   is separated by ~1" at a position angle of ~184 in May 2007. The precise orientation
   of the binary axis should be checked before the exposure since orbital motion during
   one year is significant and only extrapolated to May 2007.
  
  The goal of the observation is the determination of the relative radial velocities
   of both components. Hence, the position of the objects with respect to the slit
   is very important and should be carried out at sub-pixel level. Very useful in this
   context are the slit viewer images after alignment since they can be used to determine
   the relative positions of both componenets in the slit. Ideally, slit viewer images
   should be recorded regularly during the observations.
  
  Each object OB should be followed by an OB for the telluric calibrator.

Waiver Requests

• No Waiver Request was submitted

Critical Observing Condition Constraints

• None

Time-Critical Aspects

• None

Special Execution Requirements

• ---(Empty)---

Special Calibration Information

• Telluric calibration using the nearby AOV star HIP 95567 (H=8). The SNR
   on the telluric calibrator should be better than 50 in the spectral range 1530-1570
   nm.

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