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Robert C. Byrd Green Bank Telescope

NRAO Green Bank

Mark H. Clark

November 16th, 2001
GBT Software Project Note 11.2

GBT Calibration FITS File Specification

PDF Version


The FITS format structure is presented for the GBT Calibration (Receiver) scan data files. The scan data FITS files are permanently archived after each observation, and will usually be input to the aips++ filler, which has the task of combining all scan data FITS files into an aips++ Measurement Set. This data may then either be processed further in aips++, or written out in an aips++ supported FITS format (one of which is single dish FITS).

The Calibration FITS file produced for each receiver contains binary tables of the smoothed, interpolated calibration temperatures for each receptor. In addition, the primary header contains default values of various efficiencies and atmospheric opacity, which may be used for subsequent data processing.


8th November 2001
Penultimate definition of FITSVER 1.1; released for general comment (Richard Prestage).
16th November 2001
Final version agreed for implementation of FITSVER 1.1. Added history. Subsequent changes to the content of this document should increment the document version number (Richard Prestage).
31st July 2007
Updated to reflect FITSVER 2.2, added linear polarization angle keywords. (Mike McCarty).

Bob Garwood