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LTO Report

Kitt Peak Nightly LTO Report For UT: 2016-07-29

Report Time (MST): 04:18                    For access to all LTO-Reports go to:

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)23.927.122.21.2
Dewpoint Temperature (°C)10.512.58.61.0
Relative humidity (%)4354325.8
Wind Speed (mph)
Wind Direction (°)000
4M Dome Temperature (°C)24.325.923.00.8
4M Dome Dewpoint (°C)10.912.49.80.8
4M Primary Mirror (°C)21.322.319.50.9

Weather Comments: Mostly clear all night. Though, did have a period of about thirty minutes starting around 23:30 where some clouds moved through. Humidity around 50% and winds 15 to 25 mph.
Recognized Hours: ( 7.75 )      18 degree twilight + 0.5 hr.

Observer Information
Telescope Observer Prop. # Instrument Detector Seeing
4 MeterMarshall, Gott, Abereshi, Harmer, Pat /2016A-2004 KOSMOS E2V 1.2
WIYNCurtis 2016A-0298 HYDRA STA1 1.3
2.1 MeterNieberding 2015B-3001 Visitor N/A N/A
FeedNo Observer --- N/A N/A N/A
0.9 MeterNo 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)
7.75 T and E        
7.5 Scientific Research   0.25 Computer Problem 02:30 - 03:00
7.25 Scientific Research   0.5 Instrument Problem 02:00 - 02:30
0.0 Scientific Research      
0.0 Scientific Research      

Observing Status
4 Meter4mAPS and guider testing tonight. Both very successful. Control room AC still not working, see MSR #25336. Found Hankison Air Drier off--dew point alarm would turn on when started, see MSR #25341. Lost a few minutes around 23:30 when clouds obscured guide star. Seeing measurements made with KOSMOS were from 0.9 to 1.5 arcseconds, median 1.3 arcseconds.
WIYNLost 20 minutes to IPS computer crash. Seeing based on FOPs ranged from 1.2 to 1.5 arcseconds, median was 1.3 arcseconds.
2.1 MeterLost 30 minutes laser problem.
FeedNot Scheduled
0.9 MeterNot Scheduled

CommentsA full night of observing for everyone.

Reported by:Doug Williams

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