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UKIRT Annual Report 1999
THE UNITED KINGDOM INFRARED TELESCOPE
ANNUAL REPORT
1999
3.2. Telescope Usage
The following table summarizes telescope usage for the two semesters
99A and 99B, which cover the period February 1, 1999 to January
31, 2000.
| Semester |
99A |
99B |
| Total number of nights |
180.5 |
176.7 |
| Eng. and Commissioning Time |
28.0 |
28.8 |
| Nights available for observing |
152.4 |
147.9 |
| Nights observed |
87.3% |
72.8% |
| Nights lost due to faults |
2.5% |
2.7% |
| Nights lost due to bad weather |
10.2% |
24.5% |
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