KPNO LTO Reports are available here

Click here for last night's (240727) : (default) Or, enter desired date (yymmdd):

Kitt Peak Nightly LTO Report For UT: 2024-07-26

Report Time (MST): 03:26                    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)	19.6	24.3	15.0	2.4
Dewpoint Temperature (°C)	10.4	15.2	6.3	2.2
Relative humidity (%)	48	66	34	5.6
Wind Speed (mph)	29.1	53.0	5.4	8.9
Wind Direction (°)	324	293	14	0.1
4M Dome Temperature (°C)	21.4	24.7	19.6	1.4
4M Dome Dewpoint (°C)	11.8	14.8	9.0	1.4
4M Primary Mirror (°C)	20.0	20.2	19.5	0.1

Weather Comments:	30mph winds to start the night, jumped to 50mph around 2000. After midnight winds fell back to around 20mph. 60% humidity until 2000 when it rose to 100%. Humidity came down to around 50% around 2300. Clouds and intermittent rain all night. Thunderstorms between 2000 and 0200.
Recognized Hours:	( 7.5 )      18 degree twilight + 0.5 hr.

Observer Information

Telescope	Observer	Prop. #	Instrument	Detector	Seeing
4 Meter	LO: Tyas (on site); SO: Ravi -1st half-, Riley -2nd half- (both remote)	---	DESI	N/A	N/A
WIYN	No Observer	2024A-300000	N/A	N/A	N/A
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
	0	Scientific Research		7.5	Weather	20:00 - 04:30
WIYN
	7.5	Shutdown		0	Weather
2Meter
	7.5	Shutdown		0	Weather
Feed
	0	Scientific Research		0	Weather
W0_9m
	7.5	Shutdown		0	Weather

Observing Status

4 Meter	DESI Survey Observing. Lost entire night to weather.
WIYN	Summer Maintenance Shutdown
2.1 Meter	Not Scheduled
Feed	Not Scheduled
0.9 Meter	WIYN 0.9M shutdown until further notice.

Comments	A power outage occurred around 2019. We stayed on line power.

Reported by:	Anthony Paat

Weather Plots