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CTIO Home > ENR CTIO Blanco 4-m 2025-04-25

ENR CTIO Blanco 4-m 2025-04-25

Date: 
Friday, April 25, 2025
Telescope: 
CTIO Blanco 4-m
Submitter: 
Ana Sofia Uzsoy, Swayamtrupta Panda
Submitter Email: 
swayamtrupta.panda@noirlab.edu
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.

Comments: 

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

Conditions: 
General Conditions
Comment: 
None.
1st Quarter
Clouds: 
Thin Clouds
Wind: 
Low
Seeing Value: 
0.90
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky : 
3
2nd Quarter
Clouds: 
Clear
Wind: 
Low
Seeing Value: 
0.85
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky: 
1
3rd Quarter
Clouds: 
Cirrus
Wind: 
Low
Seeing Value: 
0.90
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky: 
2
4th Quarter
Clouds: 
Clear
Wind: 
Low
Seeing Value: 
1.05
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky: 
1
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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: 
arjun.dey@noirlab.edu [1]
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
Source URL (modified on 04/26/2025 - 07:22): http://www.ctio.noao.edu/noao/node/22720

Links
[1] mailto:arjun.dey@noirlab.edu
[2] http://www.ctio.noao.edu/noao/field-collection/field-nr-prog/44362/delete?destination=print/content/enr-ctio-blanco-4-m-2025-04-25
[3] http://www.ctio.noao.edu/noao/field-collection/field-nr-prog/44362/edit?destination=print/content/enr-ctio-blanco-4-m-2025-04-25
[4] http://www.ctio.noao.edu/noao/field-collection/field-nr-prog/add/node/22720?destination=print/content/enr-ctio-blanco-4-m-2025-04-25