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ENR CTIO Blanco 4-m 2025-09-25

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Date: 
Thursday, September 25, 2025
Telescope: 
CTIO Blanco 4-m
Submitter: 
Nitya Pandey
Submitter Email: 
npandey@das.uchile.cl
Observer Support: 
Manuel Hernandez
Night Assistant: 
Claudio Aguilera
Also Present: 
Rodrigo Hinojosa, K. Boutsia, Isak Wold
Problems: 

None.

Comments: 

Closed for clouds most of the night. The 2nd half observer called it a night at 5:30am CLT

Conditions: 
General Conditions
Comment: 
None.
1st Quarter
Clouds: 
Partially cloudy
Wind: 
Low
Seeing Value: 
1.10
Seeing Variability: 
0.6
Seeing Source: 
The Telescope I used
Sky : 
4
2nd Quarter
Clouds: 
Overcast
Wind: 
Low
Seeing Value: 
0.00
Seeing Variability: 
0
Seeing Source: 
CTIO Seeing monitor
Sky: 
6
3rd Quarter
Clouds: 
Overcast
Seeing Value: 
0.00
Seeing Variability: 
0
Seeing Source: 
CTIO Seeing monitor
Sky: 
8
4th Quarter
Clouds: 
Overcast
Seeing Value: 
0.00
Seeing Variability: 
0
Seeing Source: 
CTIO Seeing monitor
Sky: 
8
Program: 
Proposal: 
2023B-502332
Target of Oportunity: 
No
Time Observed: 
0.25
Time Engineering: 
0.0
Time lost technical: 
0.0
Time lost weather: 
4.75
Time lost other: 
0.0
Description: 
CIDER
Primary Investigator: 
S. Malhotra
Email: 
sangeeta.malhotra@nasa.gov
Institution: 
NASA Goddard Space Flight Center
Instrument: 
CTIO 4m DECam
Organization: 
NOAO
Total Program Time: 
5
Proposal: 
2025B-213846
Target of Oportunity: 
No
Time Observed: 
0.0
Time Engineering: 
0.0
Time lost technical: 
0.0
Time lost weather: 
5.0
Time lost other: 
0.0
Description: 
Deep Survey of Neptunes Irregular Satellites
Primary Investigator: 
N. Pandey
Email: 
npandey@das.uchile.cl
Institution: 
Universidad de Chile
Instrument: 
CTIO 4m DECam
Organization: 
Chile
Total Program Time: 
5
Total Times Time Observed Time Engineering Time lost technical Time lost weather Time lost other Total Program Time
2025-09-25 0.25 0.0 0.0 9.75 0.0 10