You are here

CTIO Home

ENR CTIO Blanco 4-m 2025-05-20

Primary tabs

Date: 
Tuesday, May 20, 2025
Telescope: 
CTIO Blanco 4-m
Submitter: 
Kethelin Parra Ramos (1st)/Tomas Ahumada(2nd)
Submitter Email: 
kethelin.ramos@usp.br
Observer Support: 
Hernan Tirado
Night Assistant: 
Alberto Alvarez
Problems: 

None.

Comments: 

None.

Conditions: 
General Conditions
Comment: 
None.
1st Quarter
Clouds: 
Partially cloudy
Wind: 
Low
Seeing Value: 
0.90
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky : 
5
2nd Quarter
Clouds: 
Partially cloudy
Wind: 
Low
Seeing Value: 
0.85
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky: 
4
3rd Quarter
Clouds: 
Cirrus
Seeing Value: 
2.00
Seeing Variability: 
0.6
Seeing Source: 
The Telescope I used
Sky: 
5
4th Quarter
Clouds: 
Cirrus
Seeing Value: 
1.50
Seeing Variability: 
0.4
Seeing Source: 
The Telescope I used
Sky: 
4
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-898110
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
Primary Investigator: 
Tomas Ahumada
Email: 
tahumada@caltech.edu
Institution: 
California Institute of Technology
Instrument: 
CTIO 4m DECam
Total Program Time: 
5.5
Total Times Time Observed Time Engineering Time lost technical Time lost weather Time lost other Total Program Time
2025-05-20 11.0 0.0 0.0 0.0 0.0 11