Date:
Friday, April 25, 2025
Telescope:
CTIO Blanco 4-m
Submitter:
Ana Sofia Uzsoy, Swayamtrupta Panda
Submitter Email:
Observer Support:
Manuel Hernandez
Night Assistant:
Rodrigo Hernandez
Also Present:
Guillermo Damke, Dustin Lang, Rodrigo Hinojosa
Problems:
20:43 Queue stopped. Interlock SISPI (OCS) broken. Restarting and reconfiguring.
20:48 Queue restarted.
Program:
Proposal:
2023B-184194
Target of Oportunity:
No
Time Observed:
11.0
Time lost technical:
0.25
Description:
Efficiently Mapping the z>2 Universe with Medium-Band Filters
Primary Investigator:
Dey-Schlegel
Email:
Institution:
Noirlab
Instrument:
CTIO 4m DECam
Organization:
NOAO
Total Program Time:
11.25
| Total Times | Time Observed | Time Engineering | Time lost technical | Time lost weather | Time lost other | Total Program Time |
|---|---|---|---|---|---|---|
| 2025-04-25 | 11.0 | 0.25 | 11.25 |
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18:20 Sunset
19:09 starting with the COSMOS deep. Sky brightness is high. Stopping and taking a g-band at the same location.
19:14 Evening -14. Begin observing.
19:16 went back to the COSMOS deep queue
20:37 seeing went down from ~0.95 to <0.85
20:43 Queue stopped. Interlock SISPI (OCS) broken. Restarting and reconfiguring.
20:48 Restarting queue.
21:27 Sky transparency went down a bit (<1), thin clouds approaching from north-west
21:36 Seeing went up to ~1’’, sky transparency went back to >1.
21:50 Finishing first quarter. Logging the conditions in the night report.
21:51 Seeing is creeping up >1
22:08 Seeing still climbing. Currently at ~1.2”
22:17 Seeing stalled at ~1.2”
22:27 Seeing went down to ~1”
22:35 Seeing at ~0.9”
22:58 Switching to wide-area survey
23:15 Seeing at 0.82”
23:40 Echarts execution error in Grafana. Refreshed the page, but unable to load.
00:41 Midpoint
02:43 Seeing ~0.9”. Stable within 0.1”
05:42 Moonrise (3% illum.)
06:07 Morning -14.
06:27 Morning -10, end of observations
07:02 Sunrise