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LTO Report

Kitt Peak Nightly LTO Report For UT: 2015-01-25

Report Time (MST): 05:15                    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)9.611.27.90.7
Dewpoint Temperature (°C)-18.7-14.7-21.21.3
Relative humidity (%)121891.7
Wind Speed (mph)
Wind Direction (°)381061810.8
4M Dome Temperature (°C)9.511.08.10.6
4M Dome Dewpoint (°C)-17.1-15.8-18.10.5
4M Primary Mirror (°C)

Weather Comments: Wave after wave of thick clouds rolled over tonight, but all high and dry. We shot through the holes when we could.
Recognized Hours: ( 11.25 )      18 degree twilight + 0.5 hr.

Observer Information
Telescope Observer Prop. # Instrument Detector Seeing
4 MeterDrozdov, Capps 2014B-0176 MOSAIC N/A 1.7
WIYNWold - remote 2014B-0450 HYDRA STA1 1.2
2.1 MeterNo Observer --- N/A N/A N/A
FeedNo Observer --- N/A N/A N/A
0.9 MeterGillam 2014B-0704 HDI 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)
1.25 Scientific Research 10.0 Weather 18:30 - 06:30
3.25 Scientific Research 8.0 Weather 19:30 - 06:30
0.0 Scientific Research      
0.0 Scientific Research      
0.0 Scientific Research 11.25 Weather 18:30 - 06:30

Observing Status
4 MeterNo technical problems. Seeing measured between 1.6 and 1.8 arcsecs on Mosaic, but it was difficult to get a good focus tonight because clouds interrupted every attempt at a focus sequence.
WIYNFive instances of Hydra failing to pick up a button. Details in WIYN nightlog. Otherwise no problem aside from the clouds. Seeing estimated between 1 and 1.5 arcsec based on the fops.
2.1 MeterNot Scheduled
FeedNot Scheduled
0.9 MeterNo problems. Observer decided that clouds were too thick for science requirements.

CommentsA frustrating night with lots of clouds.

Reported by:Dave Summers

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