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Kitt Peak Nightly LTO Report For UT: 2026-03-08

Report Time (MST): 06:10                    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)	8.5	9.8	6.8	0.5
Dewpoint Temperature (°C)	-12.8	-9.7	-16.6	1.9
Relative humidity (%)	21	26	15	2.5
Wind Speed (mph)	16.8	25.1	1.9	4.4
Wind Direction (°)	58	276	53	0.4
4M Dome Temperature (°C)	8.4	9.9	6.9	0.6
4M Dome Dewpoint (°C)	-10.2	-7.9	-12.6	1.5
4M Primary Mirror (°C)	7.3	9.0	4.9	0.9

Weather Comments:	Clear skies all night. Winds from the East between 10-20 mph. Humidity slowly climbed throughout the night starting at 12% and rising to 25%.
Recognized Hours:	( 10 )      18 degree twilight + 0.5 hr.

Observer Information

Telescope	Observer	Prop. #	Instrument	Detector	Seeing
4 Meter	LO: Landriau (on site): SOs: Douglass, Xu (remote)	---	DESI	N/A	1.4
WIYN	Fernandez	2026A-300001	NEID	N/A	1.3
2.1 Meter	No Observer	---	---	N/A	N/A
Feed	No Observer	---	N/A	N/A	N/A
0.9 Meter	No Observer	---	---	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
	9.92	Scientific Research		0.08	Misc. Problems	21:00 - 21:30
WIYN
	10	Scientific Research		0	Weather
2Meter
	10	Shutdown		0	Weather
Feed
	0	Scientific Research		0	Weather
W0_9m
	10	Shutdown		0	Weather

Observing Status

4 Meter	DESI Survey Observing. Only lost 5 mins to the VC caravan departure. Seeing Range: 1.0-2.5 arcsec, Median: 1.4 arcsec.
WIYN	NEID Q Observing. No time lost. Seeing Range: 0.9-3.2 arcsec, Median: 1.3 arcsec.
2.1 Meter	Not Scheduled
Feed	Not Scheduled
0.9 Meter	Not Scheduled

Comments	A quiet night.

Reported by:	Amy Robertson

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