LTO Report
Kitt Peak Nightly LTO Report For UT: 2025-06-07
Report Time (MST): 04:27
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) | 19.7 | 22.2 | 18.0 | 0.8 |
|---|
| Dewpoint Temperature (°C) | -5.4 | -2.0 | -7.2 | 0.7 |
|---|
| Relative humidity (%) | 18 | 25 | 14 | 1.4 |
|---|
| Wind Speed (mph) | 11.7 | 20.9 | 4.5 | 2.5 |
|---|
| Wind Direction (°) | 126 | 91 | 258 | 0.6 |
|---|
| 4M Dome Temperature (°C) | 19.4 | 22.1 | 17.8 | 0.9 |
|---|
| 4M Dome Dewpoint (°C) | -2.5 | 0.5 | -3.9 | 0.7 |
|---|
| 4M Primary Mirror (°C) | 16.9 | 18.1 | 14.1 | 1.2 |
|---|
| Weather Comments: | Clear all night. Humidity remained below 22%. Moderate wind shifting from S through E to NNE as the night progressed. Speed between 5-21 mph. |
|---|
| Recognized Hours: | ( 7 ) 18 degree twilight + 0.5 hr. |
Observer Information
| Telescope | Observer | Prop. # | Instrument | Detector | Seeing |
|---|
| 4 Meter | LO: Landriau (on site); SO: Hagen (on site, all night) | --- | DESI | N/A | 1.0 |
|---|
| WIYN | Fernandez | 2025A-300001 | NEID | N/A | 0.8 |
|---|
| 2.1 Meter | No Observer | --- | N/A | N/A | N/A |
|---|
| Feed | No Observer | --- | N/A | N/A | N/A |
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| 0.9 Meter | No Observer | --- | N/A | 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 |
|---|
| 6.92 | Scientific Research | | 0.08 | Misc. Problems | 22:00 - 22:30 |
|
| WIYN |
|---|
| 6.89 | Scientific Research | | 0.11 | Instrument Problem | 00:30 - 01:00 |
|
| 2Meter |
|---|
| 7 | Shutdown | | 0 | Weather | |
|
| Feed |
|---|
| 0 | Scientific Research | | 0 | Weather | |
|
| W0_9m |
|---|
| 7 | Shutdown | | 0 | Weather | |
Observing Status
| 4 Meter | DESI Survey Observing. No technical problems. Lost 5 minutes around 22:40 waiting for the VC caravan to depart. Seeing ranged between 0.81-1.70 arcseconds with a median of 1.0 arcseconds. |
|---|
| WIYN | NEID Queue Observing. Lost 6.6 minutes to NEID bench crash starting around 00:30. Seeing ranged between 0.5-1.4 arcseconds with a median of 0.8 arcsecond. |
|---|
| 2.1 Meter | Not Scheduled |
|---|
| Feed | Not Scheduled |
|---|
| 0.9 Meter | Not Scheduled |
|---|
| Comments | Another quiet and productive night observing. |
|---|
| Reported by: | Doug Williams |
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Weather Plots
