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LTO Report

Kitt Peak Nightly LTO Report For UT: 2016-06-27

Report Time (MST): 04:21                    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)
Dewpoint Temperature (°C)
Relative humidity (%)000
Wind Speed (mph)
Wind Direction (°)000
4M Dome Temperature (°C)
4M Dome Dewpoint (°C)
4M Primary Mirror (°C)

Weather Comments: Passing storms during the evening and through twilight. More passing clouds until ~00:15, but able to observer after. Moderate variable winds from ~30d-140d, but mostly calm through the night.
Recognized Hours: ( 7 )      18 degree twilight + 0.5 hr.

Observer Information
Telescope Observer Prop. # Instrument Detector Seeing
4 MeterNo Observer --- N/A N/A N/A
WIYNHardegree-Ullman 2016A-0328 HYDRA N/A 1.1
2.1 MeterRay 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)
7.0 Maintenance        
4.5 Scientific Research 2.5 Weather 19:30 - 00:00
3.5 Scientific Research 3.5 Weather 19:00 - 01:00
0.0 Scientific Research      
0.0 Scientific Research      

Observing Status
4 MeterSummer Maintenance Shutdown
WIYNLost about 2.5 hrs to threatening clouds. Seeing estimated by FOPs Range: <1-1.5 arcsec, Median: 1.1 arcsec.
2.1 MeterLost about 3.5 hrs to threatening clouds.
FeedNot Scheduled
0.9 MeterNot Scheduled

CommentsAn evening thunderstorm kept us closed through sunset and twilight, we were able to open for about an hour until 22:45 when opaque, but non-rainy clouds moved through. Opened again at 00:00 and were able to observe for the rest of the night, clouds cleared out. No major issues, and relatively good observing conditions after 01:00.

Reported by:Malanka Riabokin / Amy Robertson

Weather Plots