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ENR CTIO Blanco 4-m 2025-06-01

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Date: 
Sunday, June 1, 2025
Telescope: 
CTIO Blanco 4-m
Submitter: 
Ian Dell'Antonio
Submitter Email: 
ian_dellantonio@brown.edu
Observer Support: 
Alfredo Zenteno
Night Assistant: 
Alberto Alvarez
Also Present: 
Shenming Fu, Ian Dell'Antonio
Problems: 

Seeing very good.  Pretty thick clouds the last 3 hours.

Comments: 

None.

Conditions: 
General Conditions
Comment: 
None.
1st Quarter
Clouds: 
Clear
Seeing Value: 
0.80
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky : 
0
2nd Quarter
Clouds: 
Clear
Seeing Value: 
0.80
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky: 
0
3rd Quarter
Clouds: 
Thin Clouds
Wind: 
Low
Seeing Value: 
0.90
Seeing Variability: 
0
Seeing Source: 
The Telescope I used
Sky: 
3
4th Quarter
Clouds: 
Overcast
Wind: 
Low
Seeing Value: 
0.90
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky: 
6
Program: 
Proposal: 
2024B-614257
Target of Oportunity: 
No
Time Observed: 
5.75
Time Engineering: 
0.0
Time lost technical: 
0.0
Time lost weather: 
0.0
Time lost other: 
0.0
Description: 
Weak lensing mass reconstruction of a sample of highly disturbed merging clusters recently discovered by eROSITA
Primary Investigator: 
Rogerio Monteiro-Oliveira
Email: 
rogerionline@gmail.com
Institution: 
Academia Sinica Institute of Astronomy and Astrophysics (ASIAA), Taiwan
Instrument: 
CTIO 4m DECam
Organization: 
NOAO
Total Program Time: 
5.75
Proposal: 
2025A-110944
Target of Oportunity: 
No
Time Observed: 
5.75
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: 
Ian Dellantonio
Email: 
ian_dellantonio@brown.edu
Institution: 
Brown University
Instrument: 
CTIO 4m DECam
Organization: 
NOAO
Total Program Time: 
5.75
Total Times Time Observed Time Engineering Time lost technical Time lost weather Time lost other Total Program Time
2025-06-01 11.5 0.0 0.0 0.0 0.0 11.5