LTO Report
Kitt Peak Nightly LTO Report For UT: 2025-05-15
Report Time (MST): 04:46
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) | 9.5 | 12.5 | 8.3 | 1.0 |
|---|
| Dewpoint Temperature (°C) | -9.2 | -8.1 | -10.4 | 0.5 |
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| Relative humidity (%) | 26 | 29 | 22 | 1.5 |
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| Wind Speed (mph) | 11.8 | 19.4 | 6.5 | 2.2 |
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| Wind Direction (°) | 278 | 234 | 10 | 0.1 |
|---|
| 4M Dome Temperature (°C) | 13.0 | 14.9 | 11.4 | 1.0 |
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| 4M Dome Dewpoint (°C) | -7.2 | -7.0 | -7.9 | 0.1 |
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| 4M Primary Mirror (°C) | 10.3 | 11.0 | 9.7 | 0.3 |
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| Weather Comments: | Clear until around midnight when some light cirrus came in. It left around 0200
and remained clear for the rest of the night. Low wind and humidity the entire
night. High dust levels the entire night with significant accumulation. The
temperature ranged from 8C to 13C and the humidity ranged from 22% to 29%. The
wind from the west ranged from 7mph to 19mph. |
|---|
| Recognized Hours: | ( 7.5 ) 18 degree twilight + 0.5 hr. |
Observer Information
| Telescope | Observer | Prop. # | Instrument | Detector | Seeing |
|---|
| 4 Meter | LO: Poppett (on-site); SO: Busmann (on-site) | --- | DESI | N/A | N/A |
|---|
| WIYN | First half (NEID/Hydra T&E): Logsdon, Li (remote); Second half (NEID Q): Patel (on-site) | 2025A-300000 | NEID/HYDRA | N/A | N/A |
|---|
| 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 |
|---|
| 0 | Scientific Research | | 7.5 | Weather | 20:30 - 04:30 |
|
| WIYN |
|---|
| 3.51 | T and E | | 3.99 | Weather | 00:00 - 04:30 |
|
| 2Meter |
|---|
| 7.5 | Shutdown | | 0 | Weather | |
|
| Feed |
|---|
| 0 | Scientific Research | | 0 | Weather | |
|
| W0_9m |
|---|
| 7.5 | Shutdown | | 0 | Weather | |
Observing Status
| 4 Meter | Full night of DESI Main Survey observing scheduled. Lost the entire night to high dust levels. No seeing measurements made. |
|---|
| WIYN | Originally scheduled for on-sky NEID and Hydra T&E. Around midnight the rest of the night was given to NEID. See WIYN nightlog for more details. 3.51 hours used for T&E, last 3.99 hours lost to high dust levels. No seeing measurements made. |
|---|
| 2.1 Meter | Not Scheduled |
|---|
| Feed | Not Scheduled |
|---|
| 0.9 Meter | Not Scheduled |
|---|
| Comments | An Ode to Dust:
Here's to you,
Dust,
Small but mighty.
We tremble at your presence,
Yet but a feather,
Makes you tidy. |
|---|
| Reported by: | John Della Costa |
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Weather Plots
