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ENR CTIO Blanco 4-m 2025-04-18

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Date: 
Friday, April 18, 2025
Telescope: 
CTIO Blanco 4-m
Submitter: 
Zachary Stone
Submitter Email: 
stone28@illinois.edu
Observer Support: 
Hernan Tirado
Night Assistant: 
Alberto Alvarez
Also Present: 
Michael Davis, Megan Averill, Bernardo Aguilera, Roberto Aviles
Problems: 

A SISPI error stopped observations for around 30 min, starting at 1:52 local time.

Comments: 

None.

Conditions: 
General Conditions
Temperature Max: 
27.00
Temperature Min: 
25.00
Humidity Max: 
18
Humidity Min: 
15
Wind Speed Max: 
22.40
Wind Speed Min: 
4.50
Comment: 
None.
1st Quarter
Clouds: 
Clear
Wind: 
Low
Seeing Value: 
0.85
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky : 
0
2nd Quarter
Clouds: 
Thin Clouds
Wind: 
Low
Seeing Value: 
0.80
Seeing Variability: 
0.2
Seeing Source: 
CTIO Seeing monitor
Sky: 
6
3rd Quarter
Clouds: 
Thin Clouds
Wind: 
Low
Seeing Value: 
0.85
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky: 
6
4th Quarter
Clouds: 
Thin Clouds
Wind: 
Medium
Seeing Value: 
1.00
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky: 
4
Program: 
Proposal: 
2025A-729671
Target of Oportunity: 
No
Time Observed: 
10.0
Time Engineering: 
0.0
Time lost technical: 
0.5
Time lost weather: 
0.0
Time lost other: 
0.0
Description: 
DESI Transient Survey
Primary Investigator: 
Antonella Palmese
Email: 
palmese@cmu.edu
Institution: 
Carnegie
Instrument: 
CTIO 4m DECam
Organization: 
N/A
Total Program Time: 
10.5
Total Times Time Observed Time Engineering Time lost technical Time lost weather Time lost other Total Program Time
2025-04-18 10.0 0.0 0.5 0.0 0.0 10.5