LTO Report
Kitt Peak Nightly LTO Report For UT: 2025-08-28
Report Time (MST): 05:13
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) | 18.5 | 18.9 | 17.9 | 0.2 |
|---|
| Dewpoint Temperature (°C) | 11.4 | 12.9 | 9.2 | 0.6 |
|---|
| Relative humidity (%) | 64 | 70 | 53 | 3.0 |
|---|
| Wind Speed (mph) | 8.3 | 14.6 | 4.0 | 1.6 |
|---|
| Wind Direction (°) | 323 | 65 | 190 | 0.3 |
|---|
| 4M Dome Temperature (°C) | 18.9 | 20.1 | 17.8 | 0.5 |
|---|
| 4M Dome Dewpoint (°C) | 12.6 | 14.4 | 11.0 | 0.7 |
|---|
| 4M Primary Mirror (°C) | 18.0 | 18.6 | 17.2 | 0.3 |
|---|
| Weather Comments: | Threatening clouds with some sprinkles for much of the night until around 0200. Mostly clear after that. Humidity ranged from 55 to 70%. Wind generally from the northeast 5 to 15mph. |
|---|
| Recognized Hours: | ( 8.75 ) 18 degree twilight + 0.5 hr. |
Observer Information
| Telescope | Observer | Prop. # | Instrument | Detector | Seeing |
|---|
| 4 Meter | LO: Landriau (on site); SOs: Wolfson (remote, 1st half), Bianchi (remote, 2nd half) | --- | DESI | N/A | 0.9 |
|---|
| WIYN | Fernandez | 2025B-300001 | NEID | N/A | 0.85 |
|---|
| 2.1 Meter | No Observer | --- | --- | N/A | N/A |
|---|
| Feed | No Observer | --- | N/A | N/A | N/A |
|---|
| 0.9 Meter | No Observer | --- | --- | 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 |
|---|
| 2.78 | Scientific Research | | 5.97 | Weather | 20:00 - 02:00 |
|
| WIYN |
|---|
| 2.44 | Scientific Research | | 6.23 | Weather | 20:00 - 02:00 |
| | | | 0.08 | Instrument Problem | 04:30 - 05:00 |
|
| 2Meter |
|---|
| 8.75 | Shutdown | | 0 | Weather | |
|
| Feed |
|---|
| 0 | Scientific Research | | 0 | Weather | |
|
| W0_9m |
|---|
| 8.75 | Shutdown | | 0 | Weather | |
Observing Status
| 4 Meter | DESI Survey Observing. Lost almost 6 hours to threatening clouds. Otherwise no problems. Seeing ranged from 0.9 to 1 arcsec with a medan of 0.9 arcsec |
|---|
| WIYN | NEID queue observing. Lost 6.23 hours to threatening clouds. Lost 0.08 hours to a bench crash on NEID at 0430. Seeing ranged from 0.7 to 1.0 arcsec with a median of 0.84 arcsec. |
|---|
| 2.1 Meter | Not Scheduled |
|---|
| Feed | Not Scheduled |
|---|
| 0.9 Meter | Not Scheduled |
|---|
| Comments | Pretty nice for the last couple of hours. |
|---|
Weather Plots
