KPNO LTO Reports are available here

Click here for last night's (230923) : (default) Or, enter desired date (yymmdd):

Kitt Peak Nightly LTO Report For UT: 2023-08-04

Report Time (MST): 03:04                    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)	22.8	26.1	21.0	1.3
Dewpoint Temperature (°C)	4.8	9.6	1.6	1.8
Relative humidity (%)	32	45	21	5.7
Wind Speed (mph)	16.2	28.9	8.3	4.2
Wind Direction (°)	268	188	345	1.3
4M Dome Temperature (°C)	23.2	26.9	21.6	1.5
4M Dome Dewpoint (°C)	6.0	9.3	3.8	1.1
4M Primary Mirror (°C)	20.7	21.5	18.9	0.7

Weather Comments:	Clear skies all night. 15mph winds to start the night, rose to 30mph by 2130. Winds fell back down to 15mph at 2230. 20% humidity until 2200 when if jumped to 35%.
Recognized Hours:	( 7.75 )      18 degree twilight + 0.5 hr.

Observer Information

Telescope	Observer	Prop. #	Instrument	Detector	Seeing
4 Meter	Landriau, Paat, Marshall (on site), Honscheid, Schubnell, Elliot, Rockosi (remote)	---	DESI	N/A	N/A
WIYN	No Observer	2023B-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
	7.75	T and E
WIYN
	7.75	Shutdown		0	Weather
2Meter
	7.75	Shutdown		0	Weather
Feed
	0	Scientific Research		0	Weather
W0_9m
	7.75	Shutdown		0	Weather

Observing Status

4 Meter	First night back on sky after shutdown. DESI tests, pointing verification and open loop tracking tests. No seeing measurements taken.
WIYN	Not Scheduled
2.1 Meter	Not Scheduled
Feed	Not Scheduled
0.9 Meter	WIYN 0.9M shutdown until further notice.

Comments	A beautiful night.

Reported by:	Anthony Paat

Weather Plots