You are here

CTIO Home

ENR CTIO Blanco 4-m 2025-09-18

Primary tabs

Date: 
Thursday, September 18, 2025
Telescope: 
CTIO Blanco 4-m
Submitter: 
Xiaolong Li
Submitter Email: 
lixl@udel.edu
Observer Support: 
Hernan Tirado
Night Assistant: 
Alberto Alvarez
Problems: 

None.

Comments: 

None.

Conditions: 
General Conditions
Comment: 
None.
1st Quarter
Clouds: 
Clear
Wind: 
Low
Seeing Value: 
1.00
Seeing Variability: 
0.2
Seeing Source: 
CTIO Seeing monitor
Sky : 
0
2nd Quarter
Clouds: 
Clear
Wind: 
Low
Seeing Value: 
0.70
Seeing Variability: 
0.2
Seeing Source: 
CTIO Seeing monitor
Sky: 
0
3rd Quarter
Clouds: 
Clear
Seeing Value: 
1.00
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky: 
0
4th Quarter
Clouds: 
Clear
Seeing Value: 
0.80
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky: 
0
Program: 
Proposal: 
2025B-335691
Target of Oportunity: 
No
Time Observed: 
5.0
Time Engineering: 
0.0
Time lost technical: 
0.0
Time lost weather: 
0.0
Time lost other: 
0.0
Primary Investigator: 
Armin Rest
Email: 
arest@stsci.edu
Institution: 
Space Telescope Science Institute
Instrument: 
CTIO 4m DECam
Total Program Time: 
5
Proposal: 
2023B-502332
Target of Oportunity: 
No
Time Observed: 
5.0
Time Engineering: 
0.0
Time lost technical: 
0.0
Time lost weather: 
0.0
Time lost other: 
0.0
Description: 
CIDER
Primary Investigator: 
Sangeeta Malhotra
Institution: 
NASA GSFC
Instrument: 
CTIO 4m DECam
Organization: 
NOAO
Total Program Time: 
5
Total Times Time Observed Time Engineering Time lost technical Time lost weather Time lost other Total Program Time
2025-09-18 10.0 0.0 0.0 0.0 0.0 10