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CTIO Home > ENR CTIO Blanco 4-m 2025-04-26

ENR CTIO Blanco 4-m 2025-04-26

Date: 
Saturday, April 26, 2025
Telescope: 
CTIO Blanco 4-m
Submitter: 
Ana Sofia Uzsoy, Swayamtrupta Panda
Submitter Email: 
ana_sofia.uzsoy@cfa.harvard.edu
Observer Support: 
Manuel Hernandez
Night Assistant: 
Rodrigo Hernandez
Also Present: 
Arjun Dey, Dustin Lang, Guillermo Damke, Alfredo Zenteno
Problems: 

None.

Comments: 

18:19 Sunset
18:54 Evening -10
19:03 LTT3218 in three MB (M464, M490, M517) and g-band
19:07 Pyxis in M464
19:13 Evening -14
19:24 COSMOS g-band pointing check
19:28 COSMOS deep (three MB - M464, M490, M517)
20:51 Seeing down to 1.08”
21:30 First quarter conditions updated. Clear, low wind, seeing ~1.2”
22:41 switch to COSMOS wide (M517)
00:30 Second quarter conditions updated. Clear, low wind, seeing ~1.1”
00:41 Midpoint
03:01 Queue running smoothly. Mild modulations in seeing (between 1.05” - 1.15”)
03:30 Third quarter conditions updated. Clear, mild wind, seeing ~1.15”
05:50 Morning -18
05:50 NGC7492 in M464
06:04 NGC7492 in M490

06:06 Last quarter conditions updated. Clear, low wind, seeing ~1.1”
06:07 Morning -14, end of observing
06:27 Morning -10
06:54 Moonrise
07:03 Sunrise

Conditions: 
General Conditions
Comment: 
None.
1st Quarter
Clouds: 
Clear
Wind: 
Low
Seeing Value: 
1.20
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky : 
1
2nd Quarter
Clouds: 
Clear
Wind: 
Low
Seeing Value: 
1.10
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky: 
0
3rd Quarter
Clouds: 
Clear
Wind: 
Medium
Seeing Value: 
1.15
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky: 
0
4th Quarter
Clouds: 
Clear
Seeing Value: 
1.10
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky: 
0
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Program: 
Proposal: 
2023B-184194
Target of Oportunity: 
No
Time Observed: 
11.25
Time Engineering: 
0.0
Time lost technical: 
0.0
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: 
11.25
Total Times Time Observed Time Engineering Time lost technical Time lost weather Time lost other Total Program Time
2025-04-26 11.25 0.0 0.0 0.0 0.0 11.25
Source URL (modified on 04/27/2025 - 07:09): http://www.ctio.noao.edu/noao/node/22721

Links
[1] mailto:arjun.dey@noirlab.edu
[2] http://www.ctio.noao.edu/noao/field-collection/field-nr-prog/44364/delete?destination=print/content/enr-ctio-blanco-4-m-2025-04-26
[3] http://www.ctio.noao.edu/noao/field-collection/field-nr-prog/44364/edit?destination=print/content/enr-ctio-blanco-4-m-2025-04-26
[4] http://www.ctio.noao.edu/noao/field-collection/field-nr-prog/add/node/22721?destination=print/content/enr-ctio-blanco-4-m-2025-04-26