bias command

This page is part of the ING manual INS-DAS-29 Operations manual for UltraDAS.

Function:

Bias clears the camera, and immediately reads it out, saving the data in a FITS file. The file is passed to the archiving and logging facilities. Multbias repeats bias a given number of times.

No preflash is applied to bias frames even if the camera is configured with a non-zero length of preflash.

A title may be given for the observation: the title appears as the datum of the OBJECT keyword in the FITS headers and as the target name in the observing log. If no title is given, the runs are titled "Bias frame".

Usage:

   bias [<camera>] ["<title>"]

   multbias [<camera>] <n-obs> ["<title>"]

where n-obs is the number of biases to be taken. The title-string must be enclosed in double quotes.