Observing overheads

There is still an issue with a variable amount of overhead for NOTCam observations which are not fully understood, but is believed to be due to the aging ISA PC-board which interfaces the detector with the data acquisition computer. However, using a ``spare'' ISA PC board did not show any clear difference. It was suggested to move the whole NOTCam data acquisition system to the old computer `elizabeth' and try to run the software from this computer.

A special exposure command for NOTCam was suggested in which the dither overhead can be folded into the readout and file storage overhead. This would not solve the problem, but would save significant amount of time on `normal' overheads and this has now been given high priority.

Thomas Augusteijn 2010-02-09