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ENR CTIO Blanco 4-m 2023-03-22

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Date: 
Wednesday, March 22, 2023
Telescope: 
CTIO Blanco 4-m
Submitter: 
Mingyu Li
Submitter Email: 
lmytime@hotmail.com
Observer Support: 
Alberto Alvarez
Night Assistant: 
None
Also Present: 
Alexie Leauthaud, Mingyu Li, Alberto Alvarez, Jiaxuan Li, Abby Mintz
Problems: 

None.

Comments: 

We do not know why the sky is bright (~20.7 mag)

Conditions: 
General Conditions
Comment: 
None.
1st Quarter
Clouds: 
Clear
Seeing Value: 
2.50
Seeing Variability: 
0.6
Seeing Source: 
CTIO Seeing monitor
Sky : 
0
2nd Quarter
Clouds: 
Clear
Seeing Value: 
1.30
Seeing Variability: 
0.2
Seeing Source: 
CTIO Seeing monitor
Sky: 
0
3rd Quarter
Clouds: 
Clear
Seeing Value: 
1.50
Seeing Variability: 
0.2
Seeing Source: 
CTIO Seeing monitor
Sky: 
0
4th Quarter
Clouds: 
Clear
Seeing Value: 
1.30
Seeing Variability: 
0.2
Seeing Source: 
CTIO Seeing monitor
Sky: 
0
Program: 
Proposal: 
2020B-0288
Target of Oportunity: 
No
Time Observed: 
9.5
Time Engineering: 
0.0
Time lost technical: 
0.0
Time lost weather: 
0.0
Time lost other: 
0.0
Primary Investigator: 
Leauthaud
Email: 
alexie@ucsc.edu
Institution: 
UCSC
Instrument: 
CTIO 4m DECam
Total Program Time: 
9.5
Total Times Time Observed Time Engineering Time lost technical Time lost weather Time lost other Total Program Time
2023-03-22 9.5 0.0 0.0 0.0 0.0 9.5