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LTO Report

Kitt Peak Nightly LTO Report For UT: 2018-10-15

Report Time (MST): 04:53                    For access to all LTO-Reports go to:

4 Meter Weather Averages
From: UT = 01:00 (MST=6:00 PM) To: UT = 13:00 (MST=6:00 AM)
Elements Mean High Low AvDev
Air Temperature (°C)
Dewpoint Temperature (°C)
Relative humidity (%)8593724.2
Wind Speed (mph)
Wind Direction (°)290921880.6
4M Dome Temperature (°C)
4M Dome Dewpoint (°C)
4M Primary Mirror (°C)

Weather Comments: Threatening clouds and fog until about 23:00. After the clouds and fog disappeared high humidity persisted. The humidity was quite unstable bouncing from 100% to 80%, or a bit lower. But, it was never below the limit long enough for the domes to dry out.
Recognized Hours: ( 10.5 )      18 degree twilight + 0.5 hr.

Observer Information
Telescope Observer Prop. # Instrument Detector Seeing
4 MeterNo Observer 2018A-0922 N/A N/A N/A
WIYNSmith -1st half- (remote)/ Douglas -2nd half- (remote) 2018B-0331/2018B-0133 HYDRA STA1 N/A
2.1 MeterNo Observer --- N/A N/A N/A
FeedNo Observer --- N/A N/A N/A
0.9 MeterBuckner, Prue, Wronko 2018B-0919 HDI N/A N/A

Time Usage During The Night
Telescope Hours Used Night's Activity   Hours Lost Time Lost
Due To:
Time of
Night (MST)
10.5 Shutdown      
0.0 Scientific Research 10.5 Weather 19:00 - 05:30
0.0 Scientific Research      
0.0 Scientific Research      
0.0 Scientific Research 10.5 Weather 19:00 - 05:30

Observing Status
4 MeterMayall shutdown in preparation for DESI.
WIYNClosed all night to bad weather.
2.1 MeterNot Scheduled
FeedNot Scheduled
0.9 MeterClosed all night to bad weather.

CommentsNot much to report - closed all night to bad weather, and dripping domes.

Reported by:Doug Williams

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