README web version of /home/usg/OPS/MTS/readme_xml/readme_84059700

Principal Investigator Email Address

• setiawan@mpia.de

Estimated Total Execution Time (hours, including overheads)

• 10:54:38

General Description

• Scientific goal & general OB descriptions
  --------------------------------------------------
  The goal of the observations is to obtain  30 radial velocity measurements 
  of FU Ori in a certain time interval in order to confirm the radial-
  velocity variation detected in the optical wavelength.
   
  The target star is bright (K= 5.16 mag) and can be very easily identified.  
  It is the brightest (central) source in the K-band (Finding Chart).
  We aim to obtain a signal to noise ratio of S/N~100.  
   
  For the object observations 30 identical science OBs which include reference wavelength
   2099 nm and 2273 nm have been prepared. 
  We need 2-3 visits per night, separated by 2-3 hours. (see Special Execution Requirements).
    For the calibration   
  we have prepared 4 calibration OBs (see Special calib requirements).

Waiver Requests

• No Waiver Request was submitted

Critical Observing Condition Constraints

• none

Time-Critical Aspects

• Object observations:
  ----------------------
  The measurements must be taken in January 2010.
  The observations are ideally done within 13 *consecutive* nights. 
  However, this can be relaxed if there is/are 1 or 2 night gaps. 
  Gaps that are longer than 2 nights must be avoided, since it can fail
  the prime scientific goal to obtain a good orbital phase coverage.  
   
  *Example*: January 2010      08  09  10  11  12  13  14  15  16  17  18  19  20
    
                              XXX  XX XXX   X  XXX XX   - XXX  XXX  X  XX XXX  XX
                                                                                  
                                                                                  
                                       where X= 1 obs. , XX= 2  obs, XXX= 3 obs. -
   = no obs.

Special Execution Requirements

• The observation sequence in one night is, for example, as follow :
  1) Setiawan_084C-0597A-01    (beginning of the night, 1st half of the night)
                                
     then after 2 - 3 hrs, followed by
  
  2) Setiawan_084C-0597A-02    (around middle of the night)
    
     after another 2 - 3 hrs, followed by
  
  3) Setiawan_084C-0597A-03    (2nd half of the night)

Special Calibration Information

• 1. Telluric standard observations:
  ----------------------------------
  
  We request 1 visit of a telluric standard star in both settings every 3 nights.
  Similar to the target star, each visit includes the two settings (Ref. 2099.3 nm,
   Ref. 2273 nm) in 1 OB.
  
  **Please choose the actual standard star at the time of observation.**
  
  We have prepared 4 dummy telluric OBs that are included in the package.
  CAL_Setiawan_084C-0597A-1  							 
  CAL_Setiawan_084C-0597A-2  
  CAL_Setiawan_084C-0597A-3  							 
  CAL_Setiawan_084C-0597A-4 
  All together, the total execution time for all OBs (31 target OBs and 
  4 telluric standard OBs) is 10:54:38							 
  
  
  2. NO use of N2O gas cell:
  --------------------------
  
  We have revised our calibration strategy. In our original proposal we required the
   use of the N2O gas cell in our OBs, but this
  is NOT NEEDED anymore. Hence, the parameter is set to FREE in the OBs.
  The N2O gas cell spectrum in the settings we use (2099.3 & 2273nm) is inferior
   to wavelength calibration that exploits the rich intrinsic telluric features in
   both settings.
  Hence, we require the observations WITHOUT the N2O gas cell simultanously attached.

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