LTO Report
Kitt Peak Nightly LTO Report For UT: 2025-06-19
Report Time (MST): 04:08
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) | 24.7 | 28.0 | 23.5 | 0.7 |
|---|
| Dewpoint Temperature (°C) | -4.0 | 1.4 | -9.6 | 2.1 |
|---|
| Relative humidity (%) | 15 | 23 | 8 | 2.6 |
|---|
| Wind Speed (mph) | 12.4 | 24.9 | 5.3 | 3.2 |
|---|
| Wind Direction (°) | 304 | 128 | 213 | 0.8 |
|---|
| 4M Dome Temperature (°C) | 23.7 | 25.7 | 22.0 | 1.0 |
|---|
| 4M Dome Dewpoint (°C) | -2.4 | -0.2 | -5.7 | 1.3 |
|---|
| 4M Primary Mirror (°C) | 16.9 | 19.0 | 15.6 | 1.0 |
|---|
| Weather Comments: | Clear all night. Humidity ranged between 8-23%. Wind from the W shifting to the N at 5-15 mph. |
|---|
| Recognized Hours: | ( 7 ) 18 degree twilight + 0.5 hr. |
Observer Information
| Telescope | Observer | Prop. # | Instrument | Detector | Seeing |
|---|
| 4 Meter | No Observer | --- | DESI | N/A | N/A |
|---|
| WIYN | Patel | 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 |
|---|
| 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 |
|---|
| 7 | Maintenance | | 0 | Weather | |
|
| WIYN |
|---|
| 6.78 | Scientific Research | | 0.22 | Instrument Problem | 21:00 - 21:30 |
|
| 2Meter |
|---|
| 7 | Shutdown | | 0 | Weather | |
|
| Feed |
|---|
| 0 | Scientific Research | | 0 | Weather | |
|
| W0_9m |
|---|
| 7 | Shutdown | | 0 | Weather | |
Observing Status
| 4 Meter | Summer Maintenance Shutdown. |
|---|
| WIYN | NEID queue observing. Lost about 13 minutes of dark time at the start of the night to the second of two NEID bench cashes in a row. Problem solved shortly after twilight ended. Seeing ranged from 0.55-1.18 arcseconds with a median of 0.8 arcsecond as estimated with NEID's guider. |
|---|
| 2.1 Meter | Not Scheduled |
|---|
| Feed | Not Scheduled |
|---|
| 0.9 Meter | Not Scheduled |
|---|
| Comments | A nice clear and warm night. |
|---|
| Reported by: | Doug Williams |
|---|
Weather Plots
