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ENR CTIO Blanco 4-m 2025-09-06

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Date: 
Saturday, September 6, 2025
Telescope: 
CTIO Blanco 4-m
Submitter: 
Himanshu Verma, Xander Hall
Submitter Email: 
hverma@lsu.edu
Observer Support: 
Alfredo Zenteno
Night Assistant: 
None
Problems: 

We had issues with ellipticals caused by the wind being higher than was reported. Issues fixed by closing some door.

11 min lost due to SISPI restrat due to out of limit error.

Comments: 

None.

Conditions: 
General Conditions
Temperature Max: 
12.00
Temperature Min: 
7.00
Humidity Max: 
25
Humidity Min: 
15
Wind Speed Max: 
6.00
Wind Speed Min: 
1.00
Comment: 
None.
1st Quarter
Clouds: 
Clear
Seeing Value: 
1.30
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky : 
0
2nd Quarter
Clouds: 
Clear
Seeing Value: 
1.30
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky: 
0
3rd Quarter
Clouds: 
Clear
Wind: 
Low
Seeing Value: 
1.30
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky: 
1
4th Quarter
Clouds: 
Clear
Seeing Value: 
1.50
Seeing Variability: 
0.4
Seeing Source: 
The Telescope I used
Sky: 
1
Program: 
Proposal: 
2025A-227091
Target of Oportunity: 
yes
Time Observed: 
1.5
Time Engineering: 
0.0
Time lost technical: 
0.0
Time lost weather: 
0.0
Time lost other: 
0.0
Description: 
Dark Energy Survey Gravitational Wave Program
Primary Investigator: 
Marcelle Soares-Santos
Email: 
marcelle@physik.uzh.ch
Institution: 
University of Zurich
Instrument: 
CTIO 4m DECam
Total Program Time: 
1.5
Proposal: 
2025A-388357
Target of Oportunity: 
No
Time Observed: 
3.5
Time Engineering: 
0.0
Time lost technical: 
0.0
Time lost weather: 
0.0
Time lost other: 
0.0
Description: 
Young S
Primary Investigator: 
Narayan, Rest
Email: 
arest@stsci.edu
Total Program Time: 
3.5
Proposal: 
2025A-587063
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: 
0.25
Description: 
A Survey for Potentially Hazardous Small Aphelion NEOs using DECam
Primary Investigator: 
Kleyna Wainscoat
Email: 
kleyna@hawaii.edu
Institution: 
University of Hawaii
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
2025-09-06 9.75 0.0 0.0 0.0 0.25 10