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LTO Report

Kitt Peak Nightly LTO Report For UT: 2023-03-20

Report Time (MST): 05:44                    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)-6.33.2-13.01.5
Relative humidity (%)4370235.6
Wind Speed (mph)27.643.76.85.7
Wind Direction (°)193243070.3
4M Dome Temperature (°C)7.810.15.11.5
4M Dome Dewpoint (°C)-4.21.9-5.71.0
4M Primary Mirror (°C)

Weather Comments: 40% humidity until 0500 when it quickly jumped to 90%. 15mph winds at the start of the night, slowly rose to 50mph by midnight before falling to 30mph around 0100. Mostly cloudy skies until midnight. Only partly cloudy in the second half of the night.
Recognized Hours: ( 9.75 )      18 degree twilight + 0.5 hr.

Observer Information
Telescope Observer Prop. # Instrument Detector Seeing
4 MeterLO: Landriau (on-site); SOs: Callow 1st 1/2 (remote), Bianchi 2nd 1/2 (remote) --- DESI N/A 1.6
WIYNPatel, Golub 2023A-0393 NEID N/A 1.4
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)
4.70 Scientific Research 5.05 Weather 19:30 - 02:00
5.06 Scientific Research 4.69 Weather 19:30 - 00:00
9.75 Shutdown 0 Weather  
0 Scientific Research 0 Weather  
9.75 Shutdown 0 Weather  

Observing Status
4 MeterDESI Survey Observing. Lost 5 hours to clouds and winds. Seeing measured between 1.2 arcseconds and 1.9 arcseconds.
WIYNNEID Queue. Lost 4.69 hours to clouds. Seeing measured betweeen 1.2 arcseconds and 2 arcseconds.
2.1 MeterNot Scheduled
FeedNot Scheduled
0.9 MeterWIYN 0.9M shutdown until further notice.

CommentsA mixed night of observing.

Reported by:Anthony Paat

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