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LTO Report

Kitt Peak Nightly LTO Report For UT: 2015-04-18

Report Time (MST): 05:29                    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)-12.2-8.6-14.11.1
Relative humidity (%)2332162.9
Wind Speed (mph)16.930.76.84.4
Wind Direction (°)26217002.5
4M Dome Temperature (°C)
4M Dome Dewpoint (°C)-7.5-5.8-8.30.5
4M Primary Mirror (°C)

Weather Comments: Clear and dry, with moderate wind, mostly in the mid 20s, out of the west.
Recognized Hours: ( 8.5 )      18 degree twilight + 0.5 hr.

Observer Information
Telescope Observer Prop. # Instrument Detector Seeing
4 MeterHirschauer 2015A-0408 KOSMOS E2V 1.4
WIYN Yoast-Hull, Fulmer 2015A-0414 HEXPAK STA1 1.1
2.1 MeterNo Observer --- N/A N/A N/A
FeedNo Observer --- N/A N/A N/A
0.9 MeterDurbala, Koopman, Hess, Tatro 2015A-0705 HDI N/A 1.4

Time Usage During The Night
Telescope Hours Used Night's Activity   Hours Lost Time Lost
Due To:
Time of
Night (MST)
8.25 Scientific Research   0.25 Computer Problem 20:30 - 21:00
0.25 Extra Science Time        
8.5 Scientific Research        
0.5 Extra Science Time        
0.0 Scientific Research      
0.0 Scientific Research      
8.5 Scientific Research      

Observing Status
4 MeterLost about 20 minutes when mayall-2 froze. Bob Marshall logged in remotely and shut down KOSMOS but was not able to bring down mayall-2. I then had to do a hard reboot of the mini-mac computer. Everything came back ok after that. Seeing was measured between 1.1 and 1.5 arcsec, with a typical of 1.4.
WIYNNo technical problems to report. Seeing estimated between 1 and 1.3 arcsec, with a typical of 1.1.
2.1 MeterNot Scheduled
FeedNot Scheduled
0.9 MeterNo technical problems to report. Seeing ranged between 1 and 1.9 arcsec, with a typical of 1.4.

CommentsA good night for observing.

Reported by:Christian Soto

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