chara:operating_procedures
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chara:operating_procedures [2023/08/18 20:56] gail_stargazer |
chara:operating_procedures [2023/08/18 20:59] gail_stargazer |
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| 4.5 Snow and cold weather | 4.5 Snow and cold weather | ||
| - | Because of the nature of the snow that falls on Mount Wilson, it is usually not a problem.* (Winte 2023 would like to speak with you.) If snow/wind conditions are such that drifting occurs, don’t open up. If there is still any snow stuck to the telescope dome itself, don’t open up. If there is snow still on the trees and branches procede with caution and make a visual assessment. | + | If there is still any snow stuck to the telescope dome itself, don’t open up. If there is snow still on the trees and branches procede with caution and make a visual assessment. |
| - | Cold temperatures around freezing also can be problematic. Several components are not rated to operate at freezing temps. Do not open unless it is above freezing and keep an eye on the temps if they are still dropping. Otherwise, you are free to observe (assuming the humidity, dust, and wind conditions allow it). Here are limits for observing close to 0ºC. | + | Cold temperatures around freezing also can be problematic. Several components are not rated to operate at freezing temps. Do not open unless it is above freezing and keep an eye on the temps if they are still dropping. Otherwise, you are free to observe (assuming the humidity, dust, and wind conditions allow it). Here are limits for observing close to freezing: |
| - | Temp_warning: T_tel < 2C or T_outside < -3C | + | Temperature warning: T_tel < 2C or T_outside < -3C |
| - | Hard_limit: T_tel < 0C or T_outside < -5C | + | Hard limit for closing: T_tel < 0C or T_outside < -5C |
| 4.6 Essential Observing Links | 4.6 Essential Observing Links | ||
chara/operating_procedures.txt · Last modified: 2023/09/01 02:50 by gail_stargazer
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