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LTO Report

Kitt Peak Nightly LTO Report For UT: 2014-12-17

Report Time (MST): 06:12                    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)1.63.6-0.80.9
Dewpoint Temperature (°C)-6.91.6-31.99.3
Relative humidity (%)64100030.4
Wind Speed (mph)
Wind Direction (°)148542391.8
4M Dome Temperature (°C)
4M Dome Dewpoint (°C)-2.40.0-8.31.3
4M Primary Mirror (°C)

Weather Comments: Started the night with mostly cloudy skies. More thicker clouds eventually moved in and by 20:00 it was overcast. After midnight, fog rolled in along with light rain which then turned into sleet/snow in the later hours of the night. The wind was moderate-strong (20-35mph) and mainly out of the south.
Recognized Hours: ( 11.5 )      18 degree twilight + 0.5 hr.

Observer Information
Telescope Observer Prop. # Instrument Detector Seeing
4 MeterOswalt, Holberg 2014B-0296 RCSP T2KB 1.5
WIYN1st half (HEXPAK): Yoast-Hull / 2nd half (WHIRC): Ponder -remote- 2014B-0451/2012B-0500 HEXPAK/WHIRC STA1 2.0
2.1 MeterNo Observer --- N/A N/A N/A
FeedNo Observer --- N/A N/A N/A
0.9 MeterTofflemire 2014B-0715 HDI N/A >2.5

Time Usage During The Night
Telescope Hours Used Night's Activity   Hours Lost Time Lost
Due To:
Time of
Night (MST)
1.5 Scientific Research   10.0 Weather 20:00 - 06:00
1.75 Scientific Research 9.75 Weather 20:00 - 06:00
0.0 Scientific Research      
0.0 Scientific Research      
1.5 Scientific Research   10.0 Weather 20:00 - 06:00

Observing Status
4 MeterNo problems other than the weather. First hour and a half was used for science although it was mostly standard targets. Estimated seeing about 1.5arcsec.
WIYNOther than the weather, there was an issue with the guide probe - See MSR#23647. No other major technical problems. Estimated seeing greater than 2 arcsec.
2.1 MeterNot Scheduled
FeedNot Scheduled
0.9 MeterOther than weather, the observer continued to deal with the same dome/shutter issues as previous nights. Issues were reported on the 0.9 night log. Two seeing measurements of +3arcsec.

CommentsBecause of the fog and icy/snowy conditions, I did not check for rocks and/or any other dangerous hazards on the road; therefore ADOT was not called. I do expect rocks on the road so please be cautious driving up in the morning. The downtown guard has been informed of the situation and would let the 6am shuttle driver know as well.

Reported by:Christian Soto

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