Terms Used in MM/Submm Calibration

We present below a list of basic terms found in the background calibration papers and in the SMT observer's guide. We hope that this will allow the reader to understand the basic nomenclature used in the calibration literature.

 

• Temperatures

  1. Ta
  2. Ta*
  3. Tr

   

• Sky Opacity

  1. tau
  2. tau(225 GHz)
  3. airmass
  4. elevation

   

• Efficiences

  1. eta_c
  2. eta_l
  3. eta_fss

Background Papers on Calibration