| Telescope operating temperature range (full performance) |
0°C to 15°C |
|
| Functional temperature range |
-10°C to 30°C |
|
| Coudé lab operating range |
-5°C to 20°C |
|
| Dust environment in enclosures and Coudé labs |
Class 30000 |
|
| Wind: |
|
|
| »Operation, enclosure open |
<14 m/s (into wind, 20 min. average) |
Full performance |
|
<18 m/s (elsewhere, 20 min. average) |
Full performance |
|
<27 m/s (gust) |
Full performance |
| »Survival, enclosure open |
36 m/s (gust) |
Minor system damage (repair time<3 weeks) |
| »Survival, enclosure closed |
47.2 m/s (gust) |
Minor system damage (repair time<3 weeks) |
|
54.2 m/s (gust) |
Major system damage(repair time>3 weeks) |
| Maximum humidity during observation |
95 % RH |
|
| Earthquakes: |
|
|
| »Normal operation or standby |
Moderate earthquakes |
Negligible system damage |
|
OBE |
Minor system damage (repair time<3 weeks) |
|
MLE |
Major system damage(repair time>3 weeks) |
| »Maintenance operations |
Relaxed requirements |
|
