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LTO Report

Kitt Peak Nightly LTO Report For UT: 2025-05-22

Report Time (MST): 04:06                    For access to all LTO-Reports go to: http://www-kpno.kpno.noirlab.edu/cgi-bin/ltoreport


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)19.623.118.30.9
Dewpoint Temperature (°C)-10.8-7.5-12.80.9
Relative humidity (%)121691.2
Wind Speed (mph)14.631.06.74.9
Wind Direction (°)2811343050.6
4M Dome Temperature (°C)18.821.817.41.0
4M Dome Dewpoint (°C)-7.6-6.0-8.80.5
4M Primary Mirror (°C)16.416.914.40.4

 
Weather Comments: 10% humidity and clear skies all night. 30mph winds out of the west at the start of the night. Winds slowly fell to 10mph by morning.
Recognized Hours: ( 7.25 )      18 degree twilight + 0.5 hr.

Observer Information
Telescope Observer Prop. # Instrument Detector Seeing
4 MeterLO: Landriau (on site); SOs: Turner (1st half, on site); Ravoux (2nd half, remote) --- DESI N/A 1.1
WIYNWard (1st half, remote), Fernandez (2nd half, on site) 2025A-978365/2025A-000000 NEID/HYDRA N/A 0.8
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)
4Meter
7.20 Scientific Research   0.05 Misc. Problems 22:00 - 22:30
WIYN
4.40 Scientific Research   1.00 Weather 20:30 - 21:30
      0.05 Instrument Problem 21:30 - 23:30
      1.80 Computer Problem 02:00 - 02:30
2Meter
7.25 Shutdown 0 Weather  
Feed
0 Scientific Research 0 Weather  
W0_9m
7.25 Shutdown 0 Weather  

Observing Status
4 MeterDESI Survey Observing. Paused for 3 minutes waiting for the VC Caravan. Seeing measured between 0.9 arcseconds and 1.7 arcseconds.
WIYNFirst half Hydra. Second half NEID Queue. Lost the first hour to high dust. Lost 1.8 hours to a wiyn-ips computer crash. Lost 3 minutes in the second half NEID guider. Seeing estiamted with the FOPs between 1 arcsecond and 1.5 arcseconds in the first half. Seeing measured with NEID between 0.5 arcseconds and 1 arcseconds in the second half
2.1 MeterNot Scheduled
FeedNot Scheduled
0.9 MeterNot Scheduled

CommentsA quiet night.

Reported by:Anthony Paat



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