HET Beginning-Trimester Report
  Third Period of 2020
August 1 - November 30

These changes are now in effect, so any 20-3 target submissions should be consistently processed with the updated TSL parser. This may require some edits to your "usual" TSL files. The TSL documentation provided on Hydra has been updated to include all of these changes:
   TSL keywords table: https://hydra.as.utexas.edu/?a=help&h=79


The following keywords are required and do not have default values:

 -all instruments require a wavelength-dependent magnitude for target:
    VIRUS:  GMAG, SDSS g filter   (can be nominal like 25.0, e.g. for surveys)
    LRS2-B: GMAG, SDSS g filter
    LRS2-R: RMAG, SDSS r filter
    HPF:    JMAG, near-infrared J-filter
       IMAG is requested, but not required (SDSS i filter)

 -all instruments require a wavelength-dependent sky surface brightness limit:
    VIRUS:  SKYBRIGHT_G (in SDSS g filter)
    LRS2-B: SKYBRIGHT_G
    LRS2-R: SKYBRIGHT_R (in SDSS r filter)
    HPF:    SKYBRIGHT_I (in SDSS i filter)
  These values should be between 14-23 mag/arcsec2.
  These requirements are verified with the guider cameras during observation.
   Our sky-brightness model is monochromatic in V, and we will adopt fixed colors
     to convert to g/r/i sky brightness.

 -all instruments require SEEING keyword, no default value
     (assumed to be in same wavelengths as SKYBRIGHT, for guide stars)

 -all instruments require SETUPMETHOD, no default value

 -all HPF targets require SNGOAL
    This is defined consistently with the HPF exposure time calculator and
    refers to the SNR per 1D extracted pixel by Goldilocks in the 19th order
      (order=18 when counting up from 0)

 -RVHIGHPREC Y/N   required for all HPF targets
   Request for highest achievable RV precision:
     -requires LFC working normally
     -requires all systems stable for 24+ hours


New keywords we have added which are optional to use:

 -EXTRACALS option for LFC on HPF:
   1xcalLFCadj = take 1x LFC before OR after observation
   2xcalLFCadj = take 1x LFC before AND after observation
 
 -OCD
   Y or N - whether or not these targets should be observed with OCD
         following the usual HETDEX approach (VIRUS-only)


I hope these help improve the scientific output of these observations. I know some of your old TSL files will need to be updated if you were not specifying some of these values in the past. But I think this investment of time will be worthwhile to better connect the Phase II requests with what we see here at the telescope while observing these targets. Let me know if you have questions about your target submissions, or other suggestions for improvements.