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ENR CTIO Blanco 4-m 2025-07-17

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Date: 
Thursday, July 17, 2025
Telescope: 
CTIO Blanco 4-m
Submitter: 
Kirill Sokolovsky
Submitter Email: 
kirx@kirx.net
Observer Support: 
Manuel Hernandez
Night Assistant: 
Claudio Aguilera
Also Present: 
Rodrigo Hinojosa, Nora Sherman
Problems: 

Interlock turned red on multiple ocations including around 6:07, 6:35, 6:53, 9:21, 9:31, 9:41 UT. In all cases it was quickly resolved by the telescope operator.

Comments: 

The mirror was partly shadowed by the lower part of the dome structure during observations of the low-elevation target 2025rbs (declination +33).

Conditions: 
General Conditions
Comment: 
None.
1st Quarter
Clouds: 
Clear
Seeing Value: 
1.00
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky : 
0
2nd Quarter
Clouds: 
Clear
Seeing Value: 
1.00
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky: 
0
3rd Quarter
Clouds: 
Clear
Seeing Value: 
0.90
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky: 
0
4th Quarter
Clouds: 
Clear
Seeing Value: 
0.90
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky: 
0
Program: 
Proposal: 
2024A-755342
Target of Oportunity: 
No
Time Observed: 
11.0
Time Engineering: 
0.0
Time lost technical: 
0.25
Time lost weather: 
0.0
Time lost other: 
0.0
Primary Investigator: 
Armin Rest
Institution: 
Space Telescope Science Institute
Instrument: 
CTIO 4m DECam
Organization: 
NOAO
Total Program Time: 
11.25
Total Times Time Observed Time Engineering Time lost technical Time lost weather Time lost other Total Program Time
2025-07-17 11.0 0.0 0.25 0.0 0.0 11.25