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ENR CTIO Blanco 4-m 2025-10-27

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Date: 
Monday, October 27, 2025
Telescope: 
CTIO Blanco 4-m
Submitter: 
Himanshu Verma
Submitter Email: 
hverma@lsu.edu
Observer Support: 
Claudio Aguilera
Night Assistant: 
Manuel Hernandez
Also Present: 
Alfredo Zenteno, Keerthi Kunnumkai
Problems: 

We were about 5 min ahead of time and one of the exposure was too close to the horizon so we had to stop and delete that exposure. The missed exposure is then taken later in the night just before the twilight script.

Comments: 

None.

Conditions: 
General Conditions
Temperature Max: 
14.00
Temperature Min: 
9.00
Humidity Max: 
70
Humidity Min: 
8
Wind Speed Max: 
8.00
Wind Speed Min: 
2.00
Comment: 
None.
1st Quarter
Clouds: 
Clear
Seeing Value: 
1.00
Seeing Variability: 
0.6
Seeing Source: 
CTIO Seeing monitor
Sky : 
1
2nd Quarter
Clouds: 
Clear
Seeing Value: 
0.60
Seeing Variability: 
0.2
Seeing Source: 
CTIO Seeing monitor
Sky: 
1
3rd Quarter
Clouds: 
Clear
Seeing Value: 
0.60
Seeing Variability: 
0.2
Seeing Source: 
CTIO Seeing monitor
Sky: 
1
4th Quarter
Clouds: 
Clear
Seeing Value: 
0.90
Seeing Variability: 
0.4
Seeing Source: 
CTIO Seeing monitor
Sky: 
1
Program: 
Proposal: 
2025A-729671
Target of Oportunity: 
yes
Time Observed: 
8.75
Time Engineering: 
0.0
Time lost technical: 
0.0
Time lost weather: 
0.0
Time lost other: 
0.0
Description: 
DESI Transient Survey
Primary Investigator: 
Palmese
Email: 
apalmese@andrew.cmu.edu
Institution: 
Carnegie Mellon University
Instrument: 
CTIO 4m DECam
Organization: 
Chile
Total Program Time: 
8.75
Total Times Time Observed Time Engineering Time lost technical Time lost weather Time lost other Total Program Time
2025-10-27 8.75 0.0 0.0 0.0 0.0 8.75