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Kitt Peak Nightly LTO Report For UT: 2019-06-19

Report Time (MST): 04:26                    For access to all LTO-Reports go to: http://www-kpno.kpno.noao.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)	18.5	21.7	17.0	1.0
Dewpoint Temperature (°C)	-6.5	-1.5	-10.4	1.8
Relative humidity (%)	18	28	11	3.3
Wind Speed (mph)	25.2	33.7	6.7	4.3
Wind Direction (°)	180	64	295	0.9
4M Dome Temperature (°C)	19.0	20.0	18.0	0.5
4M Dome Dewpoint (°C)	-4.3	-1.6	-6.0	1.0
4M Primary Mirror (°C)	21.2	21.4	21.0	0.1

Weather Comments:	Clear with a 10 to 18 mph wind out of the SW. Low humidity
Recognized Hours:	( 7 )      18 degree twilight + 0.5 hr.

Observer Information

Telescope	Observer	Prop. #	Instrument	Detector	Seeing
4 Meter	No Observer	---	N/A	N/A	N/A
WIYN	Everett	---	NESSI	N/A	1.5
2.1 Meter	No Observer	---	N/A	N/A	N/A
Feed	No Observer	---	N/A	N/A	N/A
0.9 Meter	No 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
	7.0	Shutdown
WIYN
	6.75	Scientific Research		0.25	Weather	00:00 - 00:30
2Meter
	0.0	Scientific Research
Feed
	0.0	Scientific Research
W0_9m
	0.0	Scientific Research

Observing Status

4 Meter	Mayall shutdown in preparation for DESI.
WIYN	Stopped for about 20 minutes around midnight to wait out a bout of poor seeing. Otherwise no problems. Seeing ranged from 1 to 2.0
2.1 Meter	Not Scheduled
Feed	Not Scheduled
0.9 Meter	Not Scheduled

Comments	A good night

Reported by:	Karen Butler

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