README web version of /home/usg/OPS/MTS/readme_xml/readme_81079800

Principal Investigator Email Address

• a.e.garcia-perez@herts.ac.uk

Estimated Total Execution Time (hours, including overheads)

• 17.45

General Description

• The purpose of this observational run is to acquire high quality infrared
   spectra for nine metal-poor stars. The H magnitude of our targets are in the range
   of 6 to 9. Oxygen abundances will be derived from the observed OH IR lines which
   lie in the spectral order 36. This order will be centered at 1557.3nm. A value of
   500 for the S/N per spectral element (2 pixels) and for the final co-added spectra
   is expected at a wavelength of 1556nm. Notice that values shown in the OBs are per
   exposure and per pixel. The stars will be observed in four different positions (nodding+jittering)
   and we will make use of AO.

Waiver Requests

• No Waiver Request was submitted

Critical Observing Condition Constraints

• No special constraints on the moon distance is required for these observations.
   However and because of the instrument performance, objects should be observed at
   distances longer than 30 degrees. It is important that observations of the calibration
   OBs do not violate the constraints on airmass. It would be appreciated that if possible,
   the observations of standard stars meet most of the standard constraints.

Time-Critical Aspects

• The telluric OBs have to be taken right after the science OB and the spectrophotometric
   at any time of the night at which they are visible. Observations of the science
   targets should be scheduled in a way that, if possible, the observations of the
   calibration stars do not violate the standard constraints.

Special Execution Requirements

• Preference should be given to the completion of all the OBs on a given
   target.

Special Calibration Information

• One telluric OB and one spectrophotometric OB is required per science
   OB. It is important to chose the right calibration OB and to observe the standard
   stars in same nodding/jittering positions than the science targets. Below, there
   is a table that summarises the information required. There is a list of science
   targets with their associated telluric and spectrophotometric standards, together
   with the names of their associated OBs. The S/N/pixel/exposure expected at 1556.7nm
   and the spectral type of the standard stars are given in the last four columns.
     
  
  Metal-poor      Telluric        Spec-phot       science OB                     
   telluric OB                     spec-phot OB                               S/N 
           Spectral type
                                                                                 
                                                                           tell spec-phot
    tell    spec-phot
  ===========================================================================================================================================================================================
  HD 4306         HR 51           HR 9087         sciCRIRES_4306_1557            
   CALCRIREStell_51_1557          CALCRIRESspecph_9087_1557-0            204     220
       B9V     B7III-IV
  HD 27928        HR 1443         HR 718          sciCRIRES_27928_1557           
   CALCRIREStell_1443_1557        CALCRIRESspecph_718_1557-0             219     200
       B2IV-V  B9III
  HD 126587       HR 5332         HR 5501         sciCRIRES_126587_1557          
   CALCRIREStell_5332_1557        CALCRIRESspecph_5501_1557-0            226     210
       A0V ?   B9.5V
  HD 128279       HR 5466         HR 5501         sciCRIRES_128279_1557          
   CALCRIREStell_5466_1557        CALCRIRESspecph_5501_1557-1            200     210
       A0p?    B9.5V
  HD 200654       HR 7933         HR 7950         sciCRIRES_200654_1557          
   CALCRIREStell_7933_1557        CALCRIRESspecph_7950_1557              210     240
       B8/B9V  A1V
  HD 218857       HR 8673         HR 9087         sciCRIRES_218857_1557          
   CALCRIREStell_8673_1557        CALCRIRESspecph_9087_1557-1            200     220
       B9V     B7III-IV
  HD 274939       HR 1947         HR 718          sciCRIRES_274939_1557          
   CALCRIREStell_1947_1557        CALCRIRESspecph_718_1557-1             215     200
       B8V     B9III
  CD-24 1782      HR 1088         HR 718          sciCRIRES_241782-[0-1]_1557    
   CALCRIREStell_1088-[0-1]_1557  CALCRIRESspecph_718_1557-[2-3]         250     200
       B9V     B9III
  CD-30 298       HR 280          HR 9087         sciCRIRES_30298-[0-3]_1557     
   CALCRIREStell_280-[0-3]_1557   CALCRIRESspecph_9087_1557-[2-5]        235     220
       B7IIIp  B7III-IV

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?

• YES