README web version of /home/usg/OPS/MTS/readme_xml/readme_60907100

Principal Investigator Email Address

• guenther@tls-tautenburg.de

Estimated Total Execution Time (hours, including overheads)

• 2.5 hours

General Description

• The aim of the project is to test the accuracy of radial-velocity
  measurements that can be achieved with CRIRES. The idea is to observe
  one none-variable star two times. Preferentially, the two observations
  should be taken in IN TWO DIFFERENT nights. In order to find out which
  RV-accuracy can be achieved, the star should be observed in J,H, and K in
  the normal way AND ADDITIONALLY IN THE K-BAND THROUGH THE
  N2O-ABSORPTION CELL (the cell has only lines in the K-band).  The use of
  this cell has been cleared with Ullie Kaeufl. That means in the K-band 
  the star should be observed with and without the cell in the first night and with
   and without the cell in the second night. Additionally to the star (GJ
  9847), a close-by B9V telluric standard star should be observed in all wavelength
   regions. The most important wavelength region is the K-band (with and without the
   cell) followed by the H and the J-band, and it is more important to have two spectra
   taken in the same wavelength region in differnt nights, rather than observing all
   wavelength regions.
  With two observations it can be tested what accuracy for RV-measurements can be
   achieved. It would be nice if the observations of the star (with and without the
   cell), the standard and the wavelength calibration are taken consecutively, and
   the same cycle is then repeated with the next wavelength region. The OBs taken without
   the cell have "attached wavelength calibrations", in order to monitor wavelength-shifts.
   This part is of lower importance, as a wavelength calibration can be obtained using
   the telluric lines.

Waiver Requests

• No Waiver Request was submitted

Critical Observing Condition Constraints

• It is a bright star, thus the project camn be carrid out under every obserbing
   conditions.

Time-Critical Aspects

• Not time-critical.

Special Execution Requirements

• ---(Empty)---

Special Calibration Information

• An important part of the project is to try out the N2O-absorption cell.
   In order to know where the cell has lines, it would be nice, if a flat-field could
   be taken with the cell DURING DAYTIME. In this way we can obtain a "cell-only" spectrum.

ToO Information

• ---(Empty)---

ToO Activators List

• ---(Empty)---

If you submitted OBs for standard stars, did you specify the magnitude
 and spectral type of all standard stars in the OBs ?

• YES

Have you included OBs for any calibrations that you need but which are
 not part of the Calibration Plan ?

• N/A

If you are observing Moving Targets, have you attached suitable ephemeris
 files to your OBs?

• N/A

If you have preferences which OBs should be executed first, did you make
 use of the User Priority field in the OBs ?

• YES