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LTO Report

Kitt Peak Nightly LTO Report For UT: 2016-02-11

Report Time (MST): 06:48                    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)13.514.812.80.3
Dewpoint Temperature (°C)-10.2-8.2-12.40.9
Relative humidity (%)1720131.5
Wind Speed (mph)
Wind Direction (°)18211201.8
4M Dome Temperature (°C)13.514.712.90.3
4M Dome Dewpoint (°C)-14.7-12.5-15.60.4
4M Primary Mirror (°C)13.113.512.80.1

Weather Comments: Clear with some occasional scattered cirrus.
Recognized Hours: ( 10.75 )      18 degree twilight + 0.5 hr.

Observer Information
Telescope Observer Prop. # Instrument Detector Seeing
4 MeterOlsen, Zhou, Wang 2016A-0453 MOSAIC N/A 0.9
WIYNRossenwasser [remote] 2016A-0451 HYDRA STA1 0.9
2.1 MeterNieberding 2015B-3001 Visitor N/A N/A
FeedNo Observer --- N/A N/A N/A
0.9 MeterDeliyannis 2016A-0902 HDI N/A 1.2

Time Usage During The Night
Telescope Hours Used Night's Activity   Hours Lost Time Lost
Due To:
Time of
Night (MST)
10.5 Scientific Research   0.25 Instrument Problem 20:30 - 04:30
10.75 Scientific Research      
10.75 Scientific Research      
0.0 Scientific Research      
10.0 Scientific Research        
0.75 T and E        

Observing Status
4 MeterA very good and productive night for the MzLS. The cleaning of the RA encoder seems to have fixed the issue of the elongated images that were seen west of the meridian the previous two nights. Had to restart MOSAIC3 a couple of times, causing a total lost of 15minutes. Seeing measured between 0.7 and 1.3 arcsec, with a typical value of 0.9.
WIYNAn issue with a MOP hang up happened during twilight, no dark time lost. Seeing estimated using the FOPS ranged between 0.7 and 1.3 arcsec, with a typical value of 0.9.
2.1 MeterGood night with no technical problems.
FeedNot Scheduled
0.9 MeterNo technical issues. Seeing measured between 1.0 to 1.4 arcsec, with a typical value of 1.2. Some focusing testing was done for collimation purposes.

CommentsAn excellent productive night.

Reported by:Christian Soto

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