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Telescope Down Time for the Period June -- November 1993

Since June 1993 the telescope operators keep a computer log of the telescope status every two hours. Analysis of the data indicates that a low percentage of telescope time was lost due to technical failures. Most technical failures have occured when the expert was at the telescope, and the problem could be solved quickly. The time distribution for the 6 months period June to November 1993 was as follows:

It is worth emphasizing that this rather positive statistics has been reached during the last half year which could have been a ``lucky'' period. It reflects mostly longer interruptions. The actual time lost might be somewhat higher since lost periods of less than two hours (e.g. phase lock problems, reboot of computers, short wobbler problems etc.) are not included.

Robert Lucas
Thu Mar 9 14:51:14 MET 1995