QL processing DREAM/STARE images


The data are processed completely as they arrive (at 1 second intervals): images from different subarrays are combined, a mean sky level subtracted, then corrected for extinction and calibrated.

The calibrated Frame image is displayed. Creation of a new Group image is deferred until a minimum number of Frame images have been created to deal with any spikes in the Frame images. This number is set to 10 and may be changed: see the NMOS parameter for _MAKE_MOSAIC_GROUP_DESPIKE_ below. The new Group image is displayed and its noise properties are calculated and logged.



The Frame image is displayed in Gaia window 1. The Group image is displayed in Gaia window 2; its variance is displayed in window 3.