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ENR CTIO Blanco 4-m 2021-07-25

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Date: 
Sunday, July 25, 2021
Telescope: 
CTIO Blanco 4-m
Submitter: 
Alfredo Zenteno
Submitter Email: 
alfredo.zenteno@noirlab.edu
Observer Support: 
Manuel Hernandez
Night Assistant: 
Rodrigo Hernandez
Also Present: 
Humberto Orrego, David Rojas
Problems: 

Power outage at 03:04 LT. We were back on the sky at 03:15 LT.

Comments: 

At 05:08 LT the crew refilled the LN2 tank.  At 05:40 we were back on the 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: 
Medium
Seeing Value: 
0.00
Seeing Variability: 
0
Seeing Source: 
CTIO Seeing monitor
Sky: 
0
3rd Quarter
Clouds: 
Clear
Seeing Value: 
1.60
Seeing Variability: 
0.4
Seeing Source: 
The Telescope I used
Sky: 
0
4th Quarter
Clouds: 
Clear
Wind: 
Low
Seeing Value: 
1.80
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky: 
0
Program: 
Proposal: 
2021A-0149
Target of Oportunity: 
No
Time Observed: 
10.5
Time Engineering: 
0.5
Time lost technical: 
0.25
Time lost weather: 
0.0
Time lost other: 
0.0
Description: 
The DECam eROSITA Survey (DeROSITAS)
Primary Investigator: 
Alfredo Zenteno
Email: 
alfredo.zenteno@noirlab.edu
Institution: 
CTIO
Instrument: 
CTIO 4m DECam
Organization: 
DD
Total Program Time: 
11.25
Total Times Time Observed Time Engineering Time lost technical Time lost weather Time lost other Total Program Time
2021-07-25 10.5 0.5 0.25 0.0 0.0 11.25