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ENR CTIO Blanco 4-m 2025-12-25

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Date: 
Thursday, December 25, 2025
Telescope: 
CTIO Blanco 4-m
Submitter: 
Ian DellAntonio (1st half), Segev BenZvi (2nd half)
Submitter Email: 
ian_dellantonio@brown.edu
Observer Support: 
Tim Abbott
Night Assistant: 
Roberto Aviles
Also Present: 
Rodrigo Hernández
Problems: 

None.

Comments: 

1st half: Creating a Uniform Sample of Clusters with X-ray and SZ Measurements in the Local Universe (Dell'Antonio)

2nd half: IBIS observing (Dey-Schlegel)

Conditions: 
General Conditions
Comment: 
None.
1st Quarter
Clouds: 
Clear
Seeing Value: 
1.20
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky : 
0
2nd Quarter
Clouds: 
Clear
Seeing Value: 
1.25
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: 
1.10
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky: 
0
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: 
Creating a Uniform Sample of Clusters with X-ray and SZ Measurements in the Local Universe
Primary Investigator: 
Dellantonio
Email: 
ian_dellantonio@brown.edu
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
2025-12-25 6.75 0.0 0.0 0.0 0.0 6.75