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LTO Report

Kitt Peak Nightly LTO Report For UT: 2025-06-19

Report Time (MST): 04:08                    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)24.728.023.50.7
Dewpoint Temperature (°C)-4.01.4-9.62.1
Relative humidity (%)152382.6
Wind Speed (mph)12.424.95.33.2
Wind Direction (°)3041282130.8
4M Dome Temperature (°C)23.725.722.01.0
4M Dome Dewpoint (°C)-2.4-0.2-5.71.3
4M Primary Mirror (°C)16.919.015.61.0

 
Weather Comments: Clear all night. Humidity ranged between 8-23%. Wind from the W shifting to the N at 5-15 mph.
Recognized Hours: ( 7 )      18 degree twilight + 0.5 hr.

Observer Information
Telescope Observer Prop. # Instrument Detector Seeing
4 MeterNo Observer --- DESI N/A N/A
WIYNPatel 2025A-300001 NEID 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 Maintenance 0 Weather  
WIYN
6.78 Scientific Research   0.22 Instrument Problem 21:00 - 21:30
2Meter
7 Shutdown 0 Weather  
Feed
0 Scientific Research 0 Weather  
W0_9m
7 Shutdown 0 Weather  

Observing Status
4 MeterSummer Maintenance Shutdown.
WIYNNEID queue observing. Lost about 13 minutes of dark time at the start of the night to the second of two NEID bench cashes in a row. Problem solved shortly after twilight ended. Seeing ranged from 0.55-1.18 arcseconds with a median of 0.8 arcsecond as estimated with NEID's guider.
2.1 MeterNot Scheduled
FeedNot Scheduled
0.9 MeterNot Scheduled

CommentsA nice clear and warm night.

Reported by:Doug Williams



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