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ENR CTIO Blanco 4-m 2025-07-25

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Date: 
Friday, July 25, 2025
Telescope: 
CTIO Blanco 4-m
Submitter: 
William Cerny
Submitter Email: 
your@email.edu
Observer Support: 
Hernan Tirado
Night Assistant: 
Alberto Alvarez
Also Present: 
Rodrigo Hernandez, Roberto Aviles, K. Boutsia
Problems: 

Keeper can be intermittently quite laggy.

Comments: 

None.

Conditions: 
General Conditions
Comment: 
None.
1st Quarter
Clouds: 
Partially cloudy
Wind: 
Low
Seeing Value: 
0.95
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky : 
3
2nd Quarter
Clouds: 
Partially cloudy
Wind: 
Low
Seeing Value: 
1.00
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky: 
3
3rd Quarter
Clouds: 
Partially cloudy
Wind: 
Low
Seeing Value: 
1.15
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky: 
4
4th Quarter
Clouds: 
Partially cloudy
Wind: 
Low
Seeing Value: 
1.20
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky: 
4
Program: 
Proposal: 
2025A-227091
Target of Oportunity: 
yes
Time Observed: 
1.25
Time Engineering: 
0.0
Time lost technical: 
0.0
Time lost weather: 
0.0
Time lost other: 
0.0
Description: 
Search, discovery, and follow up of electromagnetic counterparts of gravitational waves
Primary Investigator: 
Marcelle Soares-Santos
Email: 
marcelle@physik.uzh.ch
Institution: 
University of Zurich
Instrument: 
CTIO 4m DECam
Organization: 
N/A
Total Program Time: 
1.25
Proposal: 
2023B-646244
Target of Oportunity: 
No
Time Observed: 
10.0
Time Engineering: 
0.0
Time lost technical: 
0.0
Time lost weather: 
0.0
Time lost other: 
0.0
Description: 
MAGIC Survey
Primary Investigator: 
Chiti
Email: 
achiti@uchicago.edu
Institution: 
University of Chicago
Instrument: 
CTIO 4m DECam
Organization: 
NOAO
Total Program Time: 
10
Total Times Time Observed Time Engineering Time lost technical Time lost weather Time lost other Total Program Time
2025-07-25 11.25 0.0 0.0 0.0 0.0 11.25