LTO Report
Kitt Peak Nightly LTO Report For UT: 2025-03-03
Report Time (MST): 05:14
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) | 5.8 | 8.8 | -2.4 | 2.7 |
|---|
| Dewpoint Temperature (°C) | -10.1 | -3.8 | -19.7 | 3.6 |
|---|
| Relative humidity (%) | 35 | 79 | 12 | 14.7 |
|---|
| Wind Speed (mph) | 31.4 | 44.1 | 17.3 | 3.9 |
|---|
| Wind Direction (°) | 202 | 79 | 297 | 0.1 |
|---|
| 4M Dome Temperature (°C) | 6.7 | 12.0 | 0.1 | 1.9 |
|---|
| 4M Dome Dewpoint (°C) | -7.5 | -3.3 | -12.3 | 2.2 |
|---|
| 4M Primary Mirror (°C) | 8.2 | 8.9 | 6.2 | 0.6 |
|---|
| Weather Comments: | Variable high cirrus and stratus clouds through the night. Wind generally from the south and west 20 to 45mph. Humidity 12 to 78%. |
|---|
| Recognized Hours: | ( 10.25 ) 18 degree twilight + 0.5 hr. |
Observer Information
| Telescope | Observer | Prop. # | Instrument | Detector | Seeing |
|---|
| 4 Meter | LO: Landriau (on site); SOs: Saulder (on site, 1st half); Riley (remote, 2nd half) | --- | DESI | N/A | 1.3 |
|---|
| WIYN | Golub | 2025A-300001 | NEID | N/A | 1.2 |
|---|
| 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 |
|---|
Time Usage During The Night
| Telescope | Hours Used | Night's Activity | | Hours Lost | Time Lost
Due To: | Time of
Night (MST) |
|---|
|
| 4Meter |
|---|
| 9.12 | Scientific Research | | 0.96 | Weather | 04:30 - 06:00 |
| | | | 0.17 | Misc. Problems | 21:00 - 21:30 |
|
| WIYN |
|---|
| 4.19 | Scientific Research | | 4.66 | Weather | 21:30 - 06:00 |
| | | | 1.40 | Instrument Problem | 02:00 - 03:30 |
|
| 2Meter |
|---|
| 10.25 | Shutdown | | 0 | Weather | |
|
| Feed |
|---|
| 0 | Scientific Research | | 0 | Weather | |
|
| W0_9m |
|---|
| 10.25 | Shutdown | | 0 | Weather | |
Observing Status
| 4 Meter | DESI Survey Observing. No technical problems. Lost 10 minutes when the visitor caravan departed. Lost an additional 0.96 hours to a combination of clouds and poor seeing at the end of the night. Seeing ranged from 0.83 to 3.73 arcsec as measured with DESI. Median seeing of 1.3 arcsec. |
|---|
| WIYN | NEID Queue Observing. Lost 1.4 hours to a mechanical instrument issue, which is believed to be related to the etalons. Lost 4.66 hours to a combination of poor seeing and clouds. Seeing ranged from 0.7 to 1.9 arcsec as estimated with NEID's guider with a median of 1.2 arcsec. |
|---|
| 2.1 Meter | Not Scheduled |
|---|
| Feed | Not Scheduled |
|---|
| 0.9 Meter | WIYN 0.9M shutdown until further notice. |
|---|
| Comments | Temperature began to plummet around 0330 and seeing began to deteriorate rapidly at that point. |
|---|
Weather Plots
