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CTIO Home > ENR CTIO Blanco 4-m 2025-12-24

ENR CTIO Blanco 4-m 2025-12-24

Date: 
Wednesday, December 24, 2025
Telescope: 
CTIO Blanco 4-m
Submitter: 
Ian Dell'Antonio
Submitter Email: 
ian_dellantonio@brown.edu
Observer Support: 
Tim Abbott
Night Assistant: 
Roberto Aviles
Also Present: 
Rodrigo Hernandez
Problems: 

None.

Comments: 

Good, if short night, with observing split between the nearby galaxy cluster survey (Dell'Antonio, 1st half) and IBIS (Dey and Schlegel, 2nd half).

Conditions: 
General Conditions
Comment: 
None.
1st Quarter
Clouds: 
Clear
Seeing Value: 
1.00
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky : 
0
2nd Quarter
Clouds: 
Clear
Seeing Value: 
1.20
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky: 
0
3rd Quarter
Clouds: 
Clear
Seeing Value: 
1.10
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky: 
0
4th Quarter
Clouds: 
Clear
Seeing Value: 
1.00
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky: 
0
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Program: 
Proposal: 
2025A-110944
Target of Oportunity: 
No
Time Observed: 
6.75
Time Engineering: 
0.0
Time lost technical: 
0.0
Time lost weather: 
0.0
Time lost other: 
0.0
Description: 
A Complete Survey of Nearby Galaxy Clusters
Primary Investigator: 
Ian Dell'Antonio
Email: 
ian_dellantonio@brown.edu [1]
Institution: 
Brown University
Instrument: 
CTIO 4m DECam
Organization: 
NOAO
Total Program Time: 
6.75
Total Times Time Observed Time Engineering Time lost technical Time lost weather Time lost other Total Program Time
2025-12-24 6.75 0.0 0.0 0.0 0.0 6.75
Source URL (modified on 12/25/2025 - 05:42): http://www.ctio.noao.edu/noao/content/ENR-CTIO-Blanco-4-m-2025-12-24

Links
[1] mailto:ian_dellantonio@brown.edu
[2] http://www.ctio.noao.edu/noao/field-collection/field-nr-prog/44902/delete?destination=print/node/23499
[3] http://www.ctio.noao.edu/noao/field-collection/field-nr-prog/44902/edit?destination=print/node/23499
[4] http://www.ctio.noao.edu/noao/field-collection/field-nr-prog/add/node/23499?destination=print/node/23499