README web version of /home/usg/OPS/MTS/readme_xml/readme_79092500

Principal Investigator Email Address

• claire.moutou@oamp.fr

Estimated Total Execution Time (hours, including overheads)

• 4.00

General Description

• TRANSIT SPECTROSCOPY OF HD189733
  ================================
  
  The objective is to monitor the transiting planetary system HD189733 in the near
   IR around and during the transit time, to search for the absorption features in
   the KI lines, at 1243 and 1252 nm.
  
  The long OBs should be executed during the transit night (Sept 17-18/2008), total
   4 hours

Waiver Requests

• request:
  Providing 4 OBs of one hour instead of 1 OB of 4 hours would mean for us loosing
   20minutes of on-target integration time and eventually some
  precision in the slit centring. As in any case, we must have a full 4 hour sequence
   executed in a row, we request the permission to submit a 
  unique 4 hour OB.
  
  agreed on Feb 14th

Critical Observing Condition Constraints

• TIME CRITICAL SEQUENCE: almost any atmospheric conditions are suitable!

Time-Critical Aspects

• TIME CRITICAL SEQUENCE.
  The execution time should now be split into two OBs because the object is setting
   and only partial transits may be observed.
  Suitable periods of time are:
  
  Night 17-18 September 2008 : transit center at 02:06UT  
  the sequence must start asap after twilight ie around 23:45UT and stop when the
   star sets at 03:45 UT
  The corresponding OB is named HD189733-17Sep08

Special Execution Requirements

• 1. please check for saturation and adapt the DIT/NDIT if required! Thanks!
   it should be fine if conditions are normal.
  
  2. The fixed position angle is introduced to avoid varying flux contamination of
   a physical companion to HD189733, at 11" (see FC)
  
  3. The AO is set in the OB, but if the seeing is too bad for an improvement with
   AO the night astronomer can decide to not using it.

Special Calibration Information

• ---(Empty)---

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?

• N/A

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