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LTO Report

Kitt Peak Nightly LTO Report For UT: 2017-10-19

Report Time (MST): 06:01                    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)-1.2-0.6-1.70.2
Relative humidity (%)2729250.6
Wind Speed (mph)
Wind Direction (°)244320930.3
4M Dome Temperature (°C)17.719.116.90.5
4M Dome Dewpoint (°C)-0.20.5-0.80.3
4M Primary Mirror (°C)16.817.215.50.3

Weather Comments: Thick clouds crept in around 22:15 and became progressively worse and more threatening. Several sucker holes opened up through the night, lasting just long enough to for some of the telescopes to get some science in between the bands of clouds. Clouds became thicker as the night progressed, however the radar dried up leaving the clouds to just be annoying rather than threatening as well. Low wind from the south for most of the night and low humidity in the 20's.
Recognized Hours: ( 10.5 )      18 degree twilight + 0.5 hr.

Observer Information
Telescope Observer Prop. # Instrument Detector Seeing
4 MeterSalzer -remote- Hirschauer-on site- 2017B-0091 KOSMOS N/A 1.3
WIYNRosenwasser -remote- 2017B-0823 HYDRA N/A 1.2
2.1 MeterNo Observer --- N/A N/A N/A
FeedNo Observer --- N/A N/A N/A
0.9 MeterDurbala,Koopmann,Parker,Hintz,Likeness, Zeng 2017B-0919 HDI N/A 1.5

Time Usage During The Night
Telescope Hours Used Night's Activity   Hours Lost Time Lost
Due To:
Time of
Night (MST)
5.5 Scientific Research 5.0 Weather 22:30 - 05:30
6.5 Scientific Research 4.0 Weather 22:30 - 06:00
0.0 Scientific Research      
0.0 Scientific Research      
4.5 Scientific Research   5.5 Weather 23:00 - 05:30
      0.5 Tele-Control Problem 19:00 - 22:00

Observing Status
4 MeterLost about half the night to thick, bands of clouds that kept drifiting through. No technical issues. Seeing Range: 1.0-2.0, Median: 1.3 arcsec.
WIYNHad a drive trip once, lost less than 10mins to this. Lost about 4 hours due to clouds. Seeing estimated by FOPs: 1.0-1.5 arcsec, Median: 1.2 arcsec.
2.1 MeterNot Scheduled
FeedNot Scheduled
0.9 Meterlost about 5.5 hrs due to clouds, technical probs 30mins, freezing keyboard and slwo mouse, had to restart tcs seeing 1.2-1.7 arcsec

CommentsA frustrating night racing the clouds.

Reported by:Amy Robertson

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