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LTO Report

Kitt Peak Nightly LTO Report For UT: 2018-06-19

Report Time (MST): 04:31                    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)19.421.317.40.8
Dewpoint Temperature (°C)-5.0-4.0-6.30.5
Relative humidity (%)1922161.5
Wind Speed (mph)13.821.68.22.6
Wind Direction (°)1333101620.9
4M Dome Temperature (°C)
4M Dome Dewpoint (°C)
4M Primary Mirror (°C)

Weather Comments: A clear and calm night with low humidity around 20-30%. Mild winds out of the South East around 10-15mph. Terrible seeing at the beginning of the night, but improved as the night went on.
Recognized Hours: ( 7 )      18 degree twilight + 0.5 hr.

Observer Information
Telescope Observer Prop. # Instrument Detector Seeing
4 MeterNo Observer 2018A-0922 N/A N/A N/A
WIYNEverett /2018A-0903 NESSI N/A 0.8
2.1 MeterCoughlin --- Visitor N/A N/A
FeedNo Observer --- N/A N/A N/A
0.9 MeterSmith, Adams, Greggory, French 2018A-0927 HDI N/A 0.9

Time Usage During The Night
Telescope Hours Used Night's Activity   Hours Lost Time Lost
Due To:
Time of
Night (MST)
7.0 Shutdown      
6.25 Scientific Research   0.25 Tele-Mechanical Problem 21:00 - 21:30
0.5 T and E        
5.0 Scientific Research        
2.0 Other        
0.0 Scientific Research      
7.0 Scientific Research      

Observing Status
4 MeterMayall shutdown in preparation for DESI.
WIYNLost about 10mins around 21:00 when the telescope drives tripped, see MSR#27300 for details. Lost another 5mins at 02:00 when the guider gui crashed. Restarting the IPS fixed the problem. Lost another 5mins waiting for the rotator to unwrap around 03:00. Still a productive night thought! Seeing Range: 0.6-2+ arcsec, Median: 0.8 arcsec.
2.1 MeterA good night of observing with no issues.
FeedNot Scheduled
0.9 MeterNo technical issues, a decent night of observing. Seeing around 0.9 arcsec.

CommentsAnother clear and calm night!

Reported by:Amy Robertson

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