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LTO Report

Kitt Peak Nightly LTO Report For UT: 2017-01-23

Report Time (MST): 06:14                    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)49.168.430.85.1
Wind Direction (°)20153181.0
4M Dome Temperature (°C)
4M Dome Dewpoint (°C)-10.5-5.3-15.83.3
4M Primary Mirror (°C)

Weather Comments: Clear all night with strong winds (45-55mph) out of the SW.
Recognized Hours: ( 11.25 )      18 degree twilight + 0.5 hr.

Observer Information
Telescope Observer Prop. # Instrument Detector Seeing
4 Meter1st half -remote-: Narayan / 2nd half: Blum 2016B-0301/2016A-0453 MOSAIC N/A N/A
WIYNDeliyannis -remote- 2016B-0632 HYDRA STA1 N/A
2.1 MeterSzafruga 2015B-3001 Visitor N/A N/A
FeedNo Observer --- N/A N/A N/A
0.9 MeterPeterson, Bradly, Burke, Butler, Thao 2016B-1011 HDI N/A 2.0

Time Usage During The Night
Telescope Hours Used Night's Activity   Hours Lost Time Lost
Due To:
Time of
Night (MST)
      11.25 Dome Enclosure Problem 19:00 - 06:30
      11.25 Instrument Problem 19:00 - 06:30
5.5 T and E   5.75 Weather 00:30 - 06:30
0.0 Scientific Research      
7.25 Scientific Research   4.0 Tele-Control Problem 19:00 - 23:00

Observing Status
4 MeterLost the entire night due to a dome skirt issue - MSR#25896. Would have lost the entire night due to the strong winds.
WIYNLost the entire night due to ongoing HYDRA issues - MSR#25506
2.1 MeterDaytime T&E work and some on-sky tasks (pointing maps) during the first half of the night.
FeedNot Scheduled
0.9 MeterLost the first 4 hrs of the night due to technical problems with the dome and telescope - the telescope didn't know where it was. Also, the cooler for CCD wasn't working so observers had to wait for it to cool down. Laslty, there have been some ongoing issues with the guider not working properly - not letting the observers select the right guider. Seeing was measured between 1.5 and 2.5 arc-seconds, with a typical value of 2.0

CommentsAlthough we had beautiful clear skies, unfortunately both the Mayall and WIYN telescopes were down for the night due to serious technical issues. The strong winds would have kept the 4m/Mayall closed all night anyway.

Reported by:Christian Soto

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