LTO Report
Kitt Peak Nightly LTO Report For UT: 2023-08-04
Report Time (MST): 03:04
For access to all LTO-Reports go to: http://www-kpno.kpno.noirlab.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) | 22.8 | 26.1 | 21.0 | 1.3 |
Dewpoint Temperature (°C) | 4.8 | 9.6 | 1.6 | 1.8 |
Relative humidity (%) | 32 | 45 | 21 | 5.7 |
Wind Speed (mph) | 16.2 | 28.9 | 8.3 | 4.2 |
Wind Direction (°) | 268 | 188 | 345 | 1.3 |
4M Dome Temperature (°C) | 23.2 | 26.9 | 21.6 | 1.5 |
4M Dome Dewpoint (°C) | 6.0 | 9.3 | 3.8 | 1.1 |
4M Primary Mirror (°C) | 20.7 | 21.5 | 18.9 | 0.7 |
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Weather Comments: | Clear skies all night. 15mph winds to start the night, rose to 30mph by 2130. Winds fell back down to 15mph at 2230. 20% humidity until 2200 when if jumped to 35%. |
Recognized Hours: | ( 7.75 ) 18 degree twilight + 0.5 hr. |
Observer Information
Telescope | Observer | Prop. # | Instrument | Detector | Seeing |
4 Meter | Landriau, Paat, Marshall (on site), Honscheid, Schubnell, Elliot, Rockosi (remote) | --- | DESI | N/A | N/A |
WIYN | No Observer | 2023B-300000 | N/A | N/A | N/A |
2.1 Meter | No Observer | --- | N/A | N/A | N/A |
Feed | No Observer | --- | N/A | N/A | N/A |
0.9 Meter | No Observer | --- | N/A | N/A | N/A |
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Time Usage During The Night
Telescope | Hours Used | Night's Activity | | Hours Lost | Time Lost Due To: | Time of Night (MST) |
|
4Meter |
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7.75 | T and E | | | | |
|
WIYN |
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7.75 | Shutdown | | 0 | Weather | |
|
2Meter |
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7.75 | Shutdown | | 0 | Weather | |
|
Feed |
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0 | Scientific Research | | 0 | Weather | |
|
W0_9m |
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7.75 | Shutdown | | 0 | Weather | |
Observing Status
4 Meter | First night back on sky after shutdown. DESI tests, pointing verification and open loop tracking tests. No seeing measurements taken. |
WIYN | Not Scheduled |
2.1 Meter | Not Scheduled |
Feed | Not Scheduled |
0.9 Meter | WIYN 0.9M shutdown until further notice. |
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Comments | A beautiful night. |
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Weather Plots




