README web version of /home/usg/OPS/MTS/readme_xml/readme_83053400

Principal Investigator Email Address

• alexis@astro.su.se

Estimated Total Execution Time (hours, including overheads)

• 9.88

General Description

• This programme observes multiple systems with the aim to measure RV to
   an accuracy of 100 m/s. The slit positioning for all science targets are in SKY
   mode, and there will be at least two stars on the slit simultaneously (in one case
   three stars). The separation and position angle are very accurately known, so slit
   positioning should pose no problem. The separation and magnitude difference are
   listed in the instrument comments. The targets are always the same as the AO and
   SV guide stars, except in one case (T31, see below). The targets should be easy
   to identify at acquisition, as there are no competeing sources in the fields. In
   the three cases where we are observing known triples, we have provided high-resolution
   finding charts showing the detailed slit positioning on arcsecond scale. The detailed
   finding charts are in the K-band, but the appearance in the H-band is very similar.
  
  Since all our targets are very southern (dec < -76), the airmass will always
   be high (>1.5).
  
  In one case, T31, we will use an AO and SV guide offset 0.65" from the slit. We
   have provided a detailed finding chart for that special case.
  
  For two OBs, we will use a telluric calibration: T54 and eta Cha 1. The corresponding
   calibration OBs are CAL_t54 and CAL_eta Cha 1.
  
  Seven OBs have a nighttime flatfield attached:
  CHRX 9C
  CHRX 28 triple 1
  CHRX 28 triple 2
  eta Cha 1
  T31 triple 1
  T31 triple 2
  T54
  
  The following OBs have no telluric associated with them:
  T51
  T5
  T46
  T45
  T33
  T31 triple 2
  T31 triple 1
  T27
  T21
  eta Cha 9
  eta Cha 12
  CHXR 59
  CHXR 47
  CHXR 37
  CHXR 28 triple 2
  CHXR 28 triple 1
  CHRX 9C
  CHRX 49
  CHRX 40
  B53

Waiver Requests

• Waiver request sent 2009-01-29, approved 2009-02-XX. ID: 383.C-0534A.01.
  
  [the waiver is not approved yet, but I submit the phase 2 OBs so that they can be
   reviewed]
  
  We requested a simple change of order setting, from the originally proposed 33/-1/n
   to 36/1/n, to take advantage of strong CO2 bands for wavelength calibration and
   correction of the slit illumination function.

Critical Observing Condition Constraints

• No

Time-Critical Aspects

• No

Special Execution Requirements

• ---(Empty)---

Special Calibration Information

• There are two science OBs that have a calibration OB each associated:
  
  T54 has the calibration CAL_T54
  eta Cha 1 has the calibration CAL_eta Cha 1
  
  These are telluric calibrations that are expected to be executed directly before
   of after the science OB.

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?

• YES

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?

• YES

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