README web version of /home/usg/OPS/MTS/readme_xml/readme_80035102

Principal Investigator Email Address

• cusano@tls-tautenburg.de

Estimated Total Execution Time (hours, including overheads)

• 3.57h

General Description

• The idea of the project is to detect the late type companions (M-stars)
   of HD113449 and BS Indi. HD113449 and BS Indi are SB1-systems in the optical. With
   CRIRES we can convert these SB1-systems into SB2-systems to determine the mass-ratios
   of the stars.
  For each science OB we added one OB for a telluric reference star. Those are called
   CAL_"name_of_the_science_OB". Those stars should be observed more or less at the
   same airmass of the science objects. 
  For HD113449 we would like to take two observations separted by rougly a month.
   Since the orbital period is 249 days and the maximum separation is velocity space
   will be in March 2008, we suggest to take one sperctrum in March 2008, and the other
   in Januray or February 2008. This second data-point will allow to determine the
   mass-ratios of the stars to a mich higher accuracy. Since the orbital period of
   BS Indi is 3.3 years, we request only one spectrum.

Waiver Requests

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Critical Observing Condition Constraints

• No particular restrictions are required to observe these two stars that
   are  bright (BS_indi K=6.6mag, HD113449 K=5.5mag).

Time-Critical Aspects

• One of the observations for HD1133449 should we carried out in March 2008,
   when the two componets of the binary are at  maximum separation in the velocity-phase
   space. The other observation should be done one or two months before that (Januray
   or February 2008).

Special Execution Requirements

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Special Calibration Information

• Standard calibrations (Flats, Arcs, BadPixMask, Darks taken during daytime)
   are fine. Precise RV measurements will be obtained using the N2O cell.

ToO Information

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ToO Activators List

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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