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ENR CTIO Blanco 4-m 2025-05-21

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Date: 
Wednesday, May 21, 2025
Telescope: 
CTIO Blanco 4-m
Submitter: 
Kethelin Parra Ramos (1st)/ Damian Pacheco
Observer Support: 
Manuel Hernandez
Night Assistant: 
Rodrigo Hernandez
Problems: 

None.

Comments: 

None.

Conditions: 
General Conditions
Comment: 
None.
1st Quarter
Clouds: 
Cirrus
Wind: 
Low
Seeing Value: 
1.00
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky : 
2
2nd Quarter
Clouds: 
Thin Clouds
Wind: 
Low
Seeing Value: 
1.00
Seeing Variability: 
0.4
Seeing Source: 
The Telescope I used
Sky: 
1
3rd Quarter
Clouds: 
Thin Clouds
Wind: 
Low
Seeing Value: 
1.20
Seeing Variability: 
0.4
Seeing Source: 
The Telescope I used
Sky: 
1
4th Quarter
Clouds: 
Cirrus
Wind: 
Low
Seeing Value: 
1.20
Seeing Variability: 
0.4
Seeing Source: 
The Telescope I used
Sky: 
2
Program: 
Proposal: 
2025A-602953
Target of Oportunity: 
No
Time Observed: 
5.5
Time Engineering: 
0.0
Time lost technical: 
0.0
Time lost weather: 
0.0
Time lost other: 
0.0
Description: 
The presence of diffuse light in fossil and non-fossil systems
Primary Investigator: 
Kethelin Parra Ramos
Email: 
kethelin.ramos@usp.br
Institution: 
University of Sao Paulo
Instrument: 
CTIO 4m DECam
Organization: 
Brazil
Total Program Time: 
5.5
Proposal: 
2025A-697040
Target of Oportunity: 
No
Time Observed: 
6.0
Time Engineering: 
0.0
Time lost technical: 
0.0
Time lost weather: 
0.0
Time lost other: 
0.0
Description: 
DEFSuS: The DECam Faint Source Microlensing Survey
Primary Investigator: 
Marz Newman
Email: 
mnewm25@lsu.edu
Institution: 
LSU
Instrument: 
CTIO 4m DECam
Organization: 
Chile
Total Program Time: 
6
Total Times Time Observed Time Engineering Time lost technical Time lost weather Time lost other Total Program Time
2025-05-21 11.5 0.0 0.0 0.0 0.0 11.5