Calculate the 2d dark frame from dark observation


Given a set of dark observations, calculate a mean dark frame from each. A bad bolometer mask can be supplied to remove known bad bolometers. Does not flatfield.


BBM = NDF (Read)
Group of files to be used as bad bolometer masks. Each data file specified with the IN parameter will be masked. The corresponding previous mask for a subarray will be used. If there is no previous mask the closest following one will be used. It is not an error for no mask to match. A NULL parameter indicates no mask files to be supplied. [!]
IN = NDF (Read)
Input files to be processed. Non-darks will be filtered out.
Control the verbosity of the application. Values can be NONE (no messages), QUIET (minimal messages), NORMAL, VERBOSE, DEBUG or ALL. [NORMAL]
OUT = NDF (Write)
Output dark files. These can be used as bad bolometer masks in subsequent processing steps via the BBM parameter in other SCUBA-2 SMURF commands.


Dark files will be subtracted from raw data during the flatfielding step. Commands that flatfield data can use either raw dark files or the output from CALCDARK.

Related Applications