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ENR CTIO Blanco 4-m 2025-07-24

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Date: 
Thursday, July 24, 2025
Telescope: 
CTIO Blanco 4-m
Submitter: 
Andrew Pace
Submitter Email: 
apace@virginia.edu
Observer Support: 
Hernan Tirado
Night Assistant: 
Alberto Alvarez
Also Present: 
Rodrigo Hernandez, Roberto Aviles, K. Boutsia
Problems: 

Had to restart keeper twice. The SISPI keeper became very slow (>15 seconds to respond). After the first restart, observer4 did not have all the images but observer2 did.

Comments: 

Major time losses (~entire final quarter) due to clouds --> could not guide when using N395 (even when increasing guider exptime).

Conditions: 
General Conditions
Comment: 
None.
1st Quarter
Clouds: 
Thin Clouds
Seeing Value: 
1.40
Seeing Variability: 
0.4
Seeing Source: 
The Telescope I used
Sky : 
0
2nd Quarter
Clouds: 
Thin Clouds
Seeing Value: 
1.60
Seeing Variability: 
0.4
Seeing Source: 
The Telescope I used
Sky: 
0
3rd Quarter
Clouds: 
Partially cloudy
Wind: 
Low
Seeing Value: 
1.50
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky: 
5
4th Quarter
Clouds: 
Partially cloudy
Wind: 
Low
Seeing Value: 
1.10
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky: 
5
Program: 
Proposal: 
2023B-646244
Target of Oportunity: 
No
Time Observed: 
8.5
Time Engineering: 
0.0
Time lost technical: 
0.0
Time lost weather: 
2.5
Time lost other: 
0.0
Description: 
MAGIC
Primary Investigator: 
Ani Chiti
Email: 
achiti@uchicago.edu
Institution: 
The University of Chicago
Instrument: 
CTIO 4m DECam
Organization: 
NOAO
Total Program Time: 
11
Total Times Time Observed Time Engineering Time lost technical Time lost weather Time lost other Total Program Time
2025-07-24 8.5 0.0 0.0 2.5 0.0 11