LTO Report
Kitt Peak Nightly LTO Report For UT: 2018-12-13
Report Time (MST): 06:08
For access to all LTO-Reports go to: http://www-kpno.kpno.noao.edu/cgi-bin/ltoreport
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) | 3.2 | 6.3 | 1.7 | 0.8 |
|---|
| Dewpoint Temperature (°C) | -6.8 | -2.5 | -14.1 | 1.8 |
|---|
| Relative humidity (%) | 51 | 62 | 26 | 6.6 |
|---|
| Wind Speed (mph) | 28.4 | 43.8 | 15.0 | 4.0 |
|---|
| Wind Direction (°) | 314 | 266 | 52 | 1.0 |
|---|
| 4M Dome Temperature (°C) | 0.0 | 0.0 | 0.0 | |
|---|
| 4M Dome Dewpoint (°C) | 0.0 | 0.0 | 0.0 | |
|---|
| 4M Primary Mirror (°C) | 0.0 | 0.0 | 0.0 | |
|---|
| Weather Comments: | Gusting winds increasing from 5-10 mph. to around 25 mph. slowly through the
night, and moving from south to north at the same pace. Humidity erratic until
about 22:00. I smoothed out after that, but stayed below the ODI or telescope
closing threshold. Colder tonight than it has been. |
|---|
| Recognized Hours: | ( 11.5 ) 18 degree twilight + 0.5 hr. |
Observer Information
| Telescope | Observer | Prop. # | Instrument | Detector | Seeing |
|---|
| 4 Meter | No Observer | 2018A-0922 | N/A | N/A | N/A |
|---|
| WIYN | Rosenwasser -remote- | 2018B-0377 | ODI | N/A | 2.3 |
|---|
| 2.1 Meter | No Observer | --- | N/A | N/A | N/A |
|---|
| Feed | No Observer | --- | N/A | N/A | N/A |
|---|
| 0.9 Meter | Hui, Graykowski, Ye | --- | 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) |
|---|
|
| 4Meter |
|---|
| 11.5 | Shutdown | | | | |
|
| WIYN |
|---|
| 10.75 | Scientific Research | | 0.75 | Weather | 19:30 - 20:30 |
|
| 2Meter |
|---|
| 0.0 | Scientific Research | | | | |
|
| Feed |
|---|
| 0.0 | Scientific Research | | | | |
|
| W0_9m |
|---|
| 10.5 | Scientific Research | | 1.0 | Instrument Problem | 19:00 - 06:00 |
Observing Status
| 4 Meter | Mayall shutdown in preparation for DESI. |
|---|
| WIYN | Lost 0.75 hr. to humitiy above ODI's limit. Seeing some "wind shake"? in images - see MSR #27580. See was not at all good tonight the range was from about 0.53 to 4.4 arcseconds, median around 2.3 arcseconds. Note the 0.53 arcsecond seeing was only a cople images at the very start of the night. |
|---|
| 2.1 Meter | Not Scheduled |
|---|
| Feed | Not Scheduled |
|---|
| 0.9 Meter | Lost about an hour total to shutter problems throughout the night. No seeing measurements taken. |
|---|
| Comments | With all that it was beautifully clear tonight. |
|---|
| Reported by: | Doug Williams |
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Weather Plots
