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ENR CTIO Blanco 4-m 2021-05-08

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Date: 
Saturday, May 8, 2021
Telescope: 
CTIO Blanco 4-m
Submitter: 
Gautham Narayan, Monika Soraisam
Submitter Email: 
gsn@illinois.edu
Observer Support: 
Hernan Tirado
Night Assistant: 
Alberto Alvarez
Also Present: 
Fernando Cortez
Problems: 

Lost connection to dome in evening twilight - 25 min delay.
 

Comments: 

First half was OK - seeing ~1.1" with occasional jumps to 2"
Clouds after midnight local time - shut down around 00:10. Tried observing some bright targets in the last 2 hr with overcast sky.

Conditions: 
General Conditions
Comment: 
None.
1st Quarter
Clouds: 
Clear
Wind: 
Low
Seeing Value: 
1.30
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky : 
0
2nd Quarter
Clouds: 
Clear
Wind: 
Low
Seeing Value: 
1.30
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky: 
0
3rd Quarter
Clouds: 
Overcast
Seeing Value: 
0.00
Seeing Variability: 
0
Seeing Source: 
CTIO Seeing monitor
Sky: 
8
4th Quarter
Clouds: 
Overcast
Seeing Value: 
0.00
Seeing Variability: 
0
Seeing Source: 
CTIO Seeing monitor
Sky: 
8
Program: 
Proposal: 
2021A-0148
Target of Oportunity: 
No
Time Observed: 
6.0
Time Engineering: 
0.0
Time lost technical: 
0.5
Time lost weather: 
0.0
Time lost other: 
4.0
Description: 
DESI
Primary Investigator: 
Wang/Palmese
Institution: 
Fermilab
Instrument: 
CTIO 4m DECam
Total Program Time: 
10.5
Total Times Time Observed Time Engineering Time lost technical Time lost weather Time lost other Total Program Time
2021-05-08 6.0 0.0 0.5 0.0 4.0 10.5