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CTIO Home > ENR CTIO Blanco 4-m 2025-04-29

ENR CTIO Blanco 4-m 2025-04-29

Date: 
Tuesday, April 29, 2025
Telescope: 
CTIO Blanco 4-m
Submitter: 
Ana Sofia Uzsoy, Swayamtrupta Panda
Submitter Email: 
swayamtrupta.panda@noirlab.edu
Observer Support: 
Rodrigo Hernandez
Night Assistant: 
Rodrigo Hinojosa
Also Present: 
Guillermo Damke, Claudio Aguilera, Manuel Hernandez
Problems: 

We encountered a problem where the disk memory became full which made the decbot crash and prevented us from taking new exposures. This was resolved by Guillermo Damke, who deleted some guider images to free up space, and we were able to continue observing.

Comments: 

18:16 Sunset
18:52 Evening -10
19:04 LTT3218 in three MB (M464, M490, M517) and g-band
19:07 Pyxis in M517
19:10 Evening -14
19:26 COSMOS g-band pointing check. Seeing 1.18”
19:29 Evening -18
19:29 COSMOS deep (three MB - M464, M490, M517)
18:33 Moonset
20:20 Pointing check
21:20 switch to COSMOS wide (M517)
21:30 First quarter conditions updated. Thin clouds, low wind, seeing ~1.2”
22:11 Seeing has been stable at ~1.3”
22:43 R. Hernandez closed the side vent gates as the wind speed climbed. This helped bring the seeing back to ~1”
00:21 System notification “low disk space”. R. Hinojosa was notified, and he took a screen capture.
00:30 Second quarter conditions updated. Clear, low wind, seeing ~1.1”
00:40 Midpoint
02:16 Disk memory full. Copilot closed suddenly. G. Damke is investigating the issue.
02:33 Resumed decbot. Time lost ~10mins.
02:40 /dev/nvme0n1p2 Used 391334 (87%) Available 63376
02:51 Queue running smoothly. Seeing down to 1.1”.

04:00 Third quarter conditions updated. Clear, mild wind, seeing ~1.2”
05:51 NGC7492 in M464
05:51 Morning -18
05:51 NGC7492 in M490
06:09 Morning -14
06:12 LTT9239 in M464
06:15 LTT6248 in M464
06:17 LTT6248 in M517
06:20 LTT6248 in gr
06:29 Morning -10
06:30 Last quarter conditions updated. Clear, low wind, seeing ~1.1”
07:05 Sunrise

Conditions: 
General Conditions
Comment: 
None.
1st Quarter
Clouds: 
Thin Clouds
Wind: 
Low
Seeing Value: 
1.20
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky : 
2
2nd Quarter
Clouds: 
Thin Clouds
Wind: 
Medium
Seeing Value: 
1.10
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky: 
3
3rd Quarter
Clouds: 
Thin Clouds
Wind: 
Medium
Seeing Value: 
1.20
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky: 
3
4th Quarter
Clouds: 
Thin Clouds
Wind: 
Medium
Seeing Value: 
1.20
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky: 
3
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Program: 
Proposal: 
2023B-184194
Target of Oportunity: 
No
Time Observed: 
11.25
Time Engineering: 
0.0
Time lost technical: 
0.25
Time lost weather: 
0.0
Time lost other: 
0.0
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: 
11.5
Total Times Time Observed Time Engineering Time lost technical Time lost weather Time lost other Total Program Time
2025-04-29 11.25 0.0 0.25 0.0 0.0 11.5
Source URL (modified on 04/30/2025 - 07:28): http://www.ctio.noao.edu/noao/node/22740

Links
[1] mailto:arjun.dey@noirlab.edu
[2] http://www.ctio.noao.edu/noao/field-collection/field-nr-prog/44370/delete?destination=print/content/enr-ctio-blanco-4-m-2025-04-29
[3] http://www.ctio.noao.edu/noao/field-collection/field-nr-prog/44370/edit?destination=print/content/enr-ctio-blanco-4-m-2025-04-29
[4] http://www.ctio.noao.edu/noao/field-collection/field-nr-prog/add/node/22740?destination=print/content/enr-ctio-blanco-4-m-2025-04-29