LTO Report
Kitt Peak Nightly LTO Report For UT: 2026-09-06
Report Time (MST): 04:38
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) | 19.6 | 21.2 | 18.5 | 0.6 |
|---|
| Dewpoint Temperature (°C) | 9.5 | 11.2 | 8.6 | 0.5 |
|---|
| Relative humidity (%) | 52 | 59 | 47 | 2.0 |
|---|
| Wind Speed (mph) | 13.0 | 22.6 | 7.3 | 3.3 |
|---|
| Wind Direction (°) | 325 | 82 | 231 | 0.9 |
|---|
| 4M Dome Temperature (°C) | -99.9 | -99.9 | -99.9 | 0.0 |
|---|
| 4M Dome Dewpoint (°C) | 11.3 | 12.6 | 10.4 | 0.6 |
|---|
| 4M Primary Mirror (°C) | 21.2 | 21.2 | 21.2 | 0.0 |
|---|
| Weather Comments: | Mostly clear tonight, though with intermittent periods of cirrus and/or thin
clouds. Humidity hovered around 50%. Wind generally from the NNW, variable at
times with speed ranging between 3-22 mph. The higher wind speed associated with
the later hours of the night. |
|---|
| Recognized Hours: | ( 9 ) 18 degree twilight + 0.5 hr. |
Observer Information
| Telescope | Observer | Prop. # | Instrument | Detector | Seeing |
|---|
| 4 Meter | No Observer | --- | N/A | N/A | N/A |
|---|
| WIYN | Fernandez | 2026B-300001 | NEID | N/A | 1.4 |
|---|
| 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 |
|---|
| 9 | Maintenance | | 0 | Weather | |
|
| WIYN |
|---|
| 2.55 | Scientific Research | | | | |
| 6.45 | T and E | | | | |
|
| 2Meter |
|---|
| 9 | Shutdown | | 0 | Weather | |
|
| Feed |
|---|
| 0 | Scientific Research | | 0 | Weather | |
|
| W0_9m |
|---|
| 9 | Shutdown | | 0 | Weather | |
Observing Status
| 4 Meter | 4m shutdown for summer maintanence. |
|---|
| WIYN | Originally scheduled as shared risk NEID Queue. We were able to do science for only about 2.55 hours on lower precision NEID targets given that the telescope collimation is not quite yet finished. The rest of the night can be considered given over to post-shutdown engineering. Seeing ranged between 1.3-1.8 arcseconds with a median of 1.4 arcseconds. |
|---|
| 2.1 Meter | Not Scheduled |
|---|
| Feed | Not Scheduled |
|---|
| 0.9 Meter | Not Scheduled |
|---|
| Comments | Seeing was not great, but a fairly nice night overall |
|---|
| Reported by: | Doug Williams |
|---|
Weather Plots
