Detector

Several upgrades were made to the code on the multi-window fast photometry sequencer board for the detector controller. The objective was to make it fully compatible for use with the normal data acquisition system. However, still some problems have been reported and we need some more extensive comparative tests between the different sequencer boards to define any remaining issues.

A detailed shutter test was made which resulted in a small revision of the shutter-delay correction applied. Several tests have show the remaining error to be less than $\sim$0.005 sec, but future tests should show if the shutter-delay is stable on longer timescales. The tests actually showed that the shutter speed limits any exposure to a minimum of 0.3 sec. Any variation in the shutter timing across the field of view is less than one part in 1000 for the shortest exposure time.