README web version of /home/usg/OPS/MTS/readme_xml/readme_80076000

Principal Investigator Email Address

• rurik.wahlin@astro.uu.se

Estimated Total Execution Time (hours, including overheads)

• 27.9 hours

General Description

• Absorption spectra in four wavelength settings.
  All science objects in this run are long period variables. The given magnitudes
   and 
  corresponded S/N are thus only estimates.
  In allmost all OBs, two science targets are placed in the slit simultaneously. 
  The target coordinates given in these OBs are the coordinates in the middle between
   
  the two targets.
  The SVGS are chosen to be the brightest of these targets while the faintest target
   
  determines the exposure time. 
  The S/N given in the comment refers to the fainter object, exept in four OBs (listed
   below).
  NGC 1846 LE 13 + LE 14 OBS-1
  NGC 1846 LE 13 + LE 14 OBS-2
  NGC 1846 LE 8 + LE 9 OBS-1
  NGC 1846 LE 8 + LE 9 OBS-2
  (In these OBs the S/N refeers to the brightest target. In all others to the faintest).
  
  S/N are given for each individual wavelength setting and nod position.
  
  In the finding charts the slit orientations are correct but the slit lengths are
   46".
  All OBs can however be executed in a 31" slit.
  
  The priorities are given under the assumption that priority 1 OBs are executed first.
  
  NEW: The center of slit coordinates of OB's 293753, 293755, 293757, 289692 and
  289687 have been adjusted to ensure that both stars fall on the
  illuminated part of the science detector. The finding charts for these
  OB's have not been corrected for these adjustments and the arrow
  indicating the center of slit is therefore slightly ofset with respect to
  the coordinates of the OB's.

Waiver Requests

• 080.D-0760A.01.WAV for use of more than one wavelength setting in a single
   OB granted  on  Tue, 10 Jul 2007

Critical Observing Condition Constraints

• None

Time-Critical Aspects

• None

Special Execution Requirements

• None

Special Calibration Information

• Execute one telluric standard observation after each science OB.
  SpType=B9V, Spectral range=B1-B9, vsini>150 kms-1.

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?

• N/A

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