README web version of /home/usg/OPS/MTS/readme_xml/readme_79033800

Principal Investigator Email Address

• bg@astro.uu.se

Estimated Total Execution Time (hours, including overheads)

• 41:19:53.000

General Description

• NOTE: Use the telluric stars when the blocks in the K band are observed.
   There are 4 of them: 26728, 26726, 267603, and 267605 and there are 4 telluric stars.
  
  We will observe K giants in 3 Bulge fields in the H and K bands. User Priorities
   1 and 2 will be observed in H and K and the rest only in H. All our stars are good
   as SV stars.  
  
  We do not know the exact sensitivity of CRIRES so we have estimated the times needed.
   In general we need total SNR per resolution element (0".3 slit) of approximately
   100. We have given exposure times from the ETC giving SNR/resolution element =40-50.
  A 0".3 slit will be projected on 3.5 pixels so  
  SNR/pixel * sqrt(3.5) = SNR/(resolution elem). 
  We hope for the anticipated increase in sensitivity. 
  
  The exposure times will give an unknown amount of signal. Please, keep the observing
   times but check that the signal
  never gets into the non-linear part. If this is the case, please, decrease DIT and
   increase NDIT instead.
  
  3 of our stars have updated coordinates compared to Phase I. The Phase 1 coordinates
   had typos.

Waiver Requests

• Waiver Request was submitted on Feb 6 and an approval came on Feb 7.
  The waiver was for OBs which are a few minutes longer than an hour.

Critical Observing Condition Constraints

• In a few cases we have provided two suggestions of AO star (the target
   itself and an AO star which lies more than 10" away but is brighter in R than the
   target itself). We do this since it is not clear which is better (depends on the
   seeing). 
  
  We do not know the exact colours of our AO stars. We have provided a guess of B-R=2.0.
   
  
  AO stars with R>15 have Lunar ill=0.7 and moon angular distance>50 degrees.

Time-Critical Aspects

• No.

Special Execution Requirements

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Special Calibration Information

• We have four telluric OBs. These should all have very high signal to noise.
   They should also
  be taken at different times. CAL-1-HK and CAL-2-HK should be observed at similar
   airmass but different H2O content in the atomsphere, 
  eg. different nights.
  
  The telluric standards should be hotter (earlier) than A, preferrably B stars, and
   need to be rotating fast, i.e. vsini>150 km/s. The signal to noise needs to be
   high (SNR per resolution element of approximately 400). These are bright stars.
   The stars themself 
  might be used as AO stars (it was not possible to estimate the time for these stars
   with AO in the ETC (brightest:R=9.6). 
  The standard stars are so bright that we have not provided finding charts.
  
  A general caution of the signal: The sensitivity of CRIRES is not known very accurately,
   so the exposure times
  will give an unknown amount of signal. Please, keep the observing times but check
   that the signal
  never gets into the non-linear part. If this is the case, please, decrease DIT and
   increase NDIT instead.
  This is especially important for the bright standard stars for telluric lines.

ToO Information

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ToO Activators List

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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?

• YES