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ENR CTIO Blanco 4-m 2023-10-22

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Date: 
Sunday, October 22, 2023
Telescope: 
CTIO Blanco 4-m
Submitter: 
Yun-Kyeong Sheen, Lluis Galbany
Submitter Email: 
yksheen@kasi.re.kr
Observer Support: 
Hernan Tirado
Night Assistant: 
Alberto Alvarez
Also Present: 
Lluis Galbany, Kathy Vivas, Arjun Dey
Problems: 

Due to a problem with lower shutter functioning we could not observe low elevation targets for 30 minutes during the first half of the night. Also, until midnight, the sky was cloudy. as a result, we lost about 3 hours.

Comments: 

None.

Conditions: 
General Conditions
Comment: 
None.
1st Quarter
Clouds: 
Partially cloudy
Wind: 
Medium
Seeing Value: 
1.60
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky : 
4
2nd Quarter
Clouds: 
Partially cloudy
Wind: 
Medium
Seeing Value: 
1.50
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky: 
2
3rd Quarter
Clouds: 
Clear
Wind: 
Medium
Seeing Value: 
1.50
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky: 
0
4th Quarter
Clouds: 
Clear
Wind: 
Medium
Seeing Value: 
1.80
Seeing Variability: 
0.4
Seeing Source: 
The Telescope I used
Sky: 
0
Program: 
Proposal: 
2014B-0404
Target of Oportunity: 
No
Time Observed: 
5.5
Time Engineering: 
0.0
Time lost technical: 
0.0
Time lost weather: 
2.0
Time lost other: 
1.0
Description: 
DECaLS
Primary Investigator: 
Arjun Dey, David Schlegel
Email: 
arjun.dey@noirlab.edu
Institution: 
Noirlab
Instrument: 
CTIO 4m DECam
Organization: 
NOAO
Total Program Time: 
8.5
Total Times Time Observed Time Engineering Time lost technical Time lost weather Time lost other Total Program Time
2023-10-22 5.5 0.0 0.0 2.0 1.0 8.5