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ENR CTIO Blanco 4-m 2025-09-05

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Date: 
Friday, September 5, 2025
Telescope: 
CTIO Blanco 4-m
Submitter: 
Divya Mishra
Submitter Email: 
dimi_24@tamu.edu
Observer Support: 
Hernan Tirado
Night Assistant: 
Alberto Alvarez
Also Present: 
Rodrigo Hernandez, Roberto Aviles, K. Boutsia, Yuchen Tang
Problems: 

Faced problem with the Keeper. It kept crashing multiple times. In the end, switched to observing via Zoom.

Comments: 

Keeper was not responding and crashing multiple times during the second half of the observing session.

Conditions: 
General Conditions
Comment: 
None.
1st Quarter
Clouds: 
Clear
Wind: 
Low
Seeing Value: 
0.80
Seeing Variability: 
0.6
Seeing Source: 
CTIO Seeing monitor
Sky : 
0
2nd Quarter
Clouds: 
Clear
Wind: 
Low
Seeing Value: 
1.00
Seeing Variability: 
0.4
Seeing Source: 
CTIO Seeing monitor
Sky: 
0
3rd Quarter
Clouds: 
Clear
Seeing Value: 
1.20
Seeing Variability: 
0.2
Seeing Source: 
CTIO Seeing monitor
Sky: 
0
4th Quarter
Clouds: 
Clear
Seeing Value: 
1.00
Seeing Variability: 
0.4
Seeing Source: 
CTIO Seeing monitor
Sky: 
0
Program: 
Proposal: 
2025B-560332
Target of Oportunity: 
No
Time Observed: 
4.75
Time Engineering: 
0.0
Time lost technical: 
0.0
Time lost weather: 
0.0
Time lost other: 
0.0
Description: 
DREAMS
Primary Investigator: 
Zang
Email: 
weicheng.zang@cfa.harvard.edu
Institution: 
Harvard
Instrument: 
CTIO 4m DECam
Organization: 
NOAO
Total Program Time: 
4.75
Proposal: 
2025B-485252
Target of Oportunity: 
yes
Time Observed: 
0.5
Time Engineering: 
0.0
Time lost technical: 
0.0
Time lost weather: 
0.0
Time lost other: 
0.0
Description: 
ToO followup for S250830bp
Primary Investigator: 
Soares-Santos
Email: 
marcelle@physik.uzh.ch
Institution: 
University of Zurich
Instrument: 
CTIO 4m DECam
Total Program Time: 
0.5
Proposal: 
2025A-729671
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: 
DESI Transient Survey
Primary Investigator: 
Andreoni/Palmese
Email: 
apalmese@andrew.cmu.edu
Institution: 
Carnegie-Mellon University
Instrument: 
CTIO 4m DECam
Total Program Time: 
5
Total Times Time Observed Time Engineering Time lost technical Time lost weather Time lost other Total Program Time
2025-09-05 10.25 0.0 0.0 0.0 0.0 10.25