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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
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.
- 63% of the telescope time were used
for observations. This includes pointing runs, holography and
receiver tuning for observations.
- 8% maintenance. This is the regular Tuesday and Friday maintenance and
includes receiver filling and pre-tuning of observing frequencies.
- 10% technical time (holography not included).
- 11% stop due to wind.
- 7% stop due to bad weather.
- 1% stop due to technical problems.
Thu Mar 9 14:51:14 MET 1995