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LTO Report

Kitt Peak Nightly LTO Report For UT: 2015-07-31

Report Time (MST): 04:40                    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: Calm and partly cloudy with humidity around 60% for most of the night. Cirrus was persistent all night. After 02:00, the clouds were thicker and more abundant.
Recognized Hours: ( 7.75 )      18 degree twilight + 0.5 hr.

Observer Information
Telescope Observer Prop. # Instrument Detector Seeing
4 MeterNo Observer --- N/A N/A N/A
WIYNMathieu, Pollack, Eggen 2015A-0407/2015A-0411 HYDRA STA1 1.0
2.1 MeterNo Observer --- N/A 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 Maintenance      
4.5 Scientific Research 3.25 Weather 20:30 - 04:30
0.0 Scientific Research      
0.0 Scientific Research      
0.0 Scientific Research      

Observing Status
4 MeterNot Scheduled
WIYNOther than the weather, no technical issues. Seeing based on the FOPS ranged between 0.9 and 1.2, with a typical value of 1.0 arcseconds.
2.1 MeterNot Scheduled
FeedNot Scheduled
0.9 MeterNot Scheduled

CommentsClouds prevented us from obtaining more data.

Reported by:Christian Soto

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