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LTO Report

Kitt Peak Nightly LTO Report For UT: 2021-10-23

Report Time (MST): 05:56                    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)11.913.710.30.8
Dewpoint Temperature (°C)-2.60.1-11.11.8
Relative humidity (%)3746204.9
Wind Speed (mph)
Wind Direction (°)1751562530.5
4M Dome Temperature (°C)11.914.710.20.9
4M Dome Dewpoint (°C)-1.30.6-9.01.3
4M Primary Mirror (°C)12.913.412.40.3

Weather Comments: Clear until 4am when a some light cirrus started moving in. A 15 to 30 mph wind out of the SSW. Humidity in the 30 to 40 percent range.
Recognized Hours: ( 10.75 )      18 degree twilight + 0.5 hr.

Observer Information
Telescope Observer Prop. # Instrument Detector Seeing
4 MeterElliot, Soares-Santos(1st half), Tan(second half) all remote --- DESI N/A 2.0
WIYNHiguera(WIYN house), Logsdon(1st hour - remote) 2021B-0000 NEID N/A 2.0
2.1 MeterNo Observer --- N/A N/A N/A
FeedNo Observer --- N/A N/A N/A
0.9 MeterNo Observer --- N/A 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)
9.0 Scientific Research   0.5 Weather 04:30 - 05:00
      1.25 Instrument Problem 19:30 - 21:00
10.75 Scientific Research      
10.75 Shutdown      
0.0 Scientific Research      
10.75 Shutdown      

Observing Status
4 MeterVery poor seeing in the 2 to 3 arc sec range limited useful observing during the first half of the night. Conditions improved enough by 00:25 to allow desi survey work to proceed smoothly until clouds started to interfer at 04:30. Lost 1/2 hour to clouds. Seeing improved to .9 arc sec by 3am. Lost 1.2 hours at the start of the night to a problem with the focus script
WIYNFull night of NEID-Q observing. Seeing ranged from 1.15 to 2.69
2.1 MeterNot Scheduled
FeedNot Scheduled
0.9 MeterWIYN 0.9M shutdown until further notice.

CommentsSeeing very poor the first half of the night. Slowly improved to sub arc second by 3am.

Reported by:Karen Butler

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