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Kitt Peak Nightly LTO Report For UT: 2026-06-14

Report Time (MST): 04:18                    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)	21.9	24.6	20.5	0.7
Dewpoint Temperature (°C)	9.4	10.6	6.7	0.7
Relative humidity (%)	45	53	32	3.6
Wind Speed (mph)	14.3	28.7	2.2	6.3
Wind Direction (°)	257	14	318	0.1
4M Dome Temperature (°C)	21.6	24.5	20.4	0.9
4M Dome Dewpoint (°C)	10.2	11.6	7.7	0.8
4M Primary Mirror (°C)	20.4	21.4	18.3	0.7

Weather Comments:	Occasional light cumulus throughout the night. Wind ranged from 2.2mph-28.7mph, with a median around 11mph. Wind direction was primarily W. Relative humidity ranged from 32%-53%, with a median around 45%.
Recognized Hours:	( 7 )      18 degree twilight + 0.5 hr.

Observer Information

Telescope	Observer	Prop. #	Instrument	Detector	Seeing
4 Meter	LO: Tyas; SOs: Li (1st half, remote), Feng (2nd half, remote)	---	DESI	N/A	1.1
WIYN	Higeura	2026A-300001	NEID	N/A	0.85
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
	6.93	Scientific Research		0.07	Weather	22:00 - 23:00
WIYN
	7	Scientific Research		0	Weather
2Meter
	7	Shutdown		0	Weather
Feed
	0	Scientific Research		0	Weather
W0_9m
	7	Shutdown		0	Weather

Observing Status

4 Meter	DESI Survey Observing. Lost 4 minutes for VC caravan departure. Seeing ranged from 0.9"-1.4", with a median of 1.1".
WIYN	NEID Queue Observing. No time lost. Seeing ranged from 0.71"-1.5", with a median of 0.87".
2.1 Meter	Not Scheduled
Feed	Not Scheduled
0.9 Meter	Not Scheduled

Comments	Occasional clouds throughout the night.

Reported by:	Ava Doty

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