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ENR CTIO Blanco 4-m 2021-01-31

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Date: 
Sunday, January 31, 2021
Telescope: 
CTIO Blanco 4-m
Submitter: 
Alice Eltvedt
Submitter Email: 
alice.m.eltvedt@durham.ac.uk
Observer Support: 
Hernan Tirado
Night Assistant: 
Alberto Alvarez
Also Present: 
Alfredo Zenteno, Behzad Ansarinejad, Fernando Cortes
Problems: 

There was high humidity at the beginning of the night so we lost ~2 hours of observing time. The moon was very bright around 3am CLT, so there were a number of exposures declared "null"/cancelled by the telescope.  

Comments: 

There was high humidity at the beginning of the night so we lost ~2 hours of observing time. The moon was very bright around 3am CLT, so there were a number of exposures declared "null"/cancelled by the telescope.  

Conditions: 
General Conditions
Comment: 
None.
1st Quarter
Clouds: 
Thin Clouds
Precipitation: 
High Humidity
Seeing Value: 
1.00
Seeing Variability: 
1.0
Seeing Source: 
The Telescope I used
Sky : 
0
2nd Quarter
Clouds: 
Thin Clouds
Precipitation: 
High Humidity
Seeing Value: 
1.40
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky: 
0
3rd Quarter
Clouds: 
Thin Clouds
Seeing Value: 
1.00
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky: 
0
4th Quarter
Clouds: 
Thin Clouds
Seeing Value: 
1.10
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky: 
0
Program: 
Proposal: 
2019A-0065
Target of Oportunity: 
No
Time Observed: 
6.0
Time Engineering: 
0.0
Time lost technical: 
0.0
Time lost weather: 
2.0
Time lost other: 
0.0
Description: 
eFEDS
Primary Investigator: 
Shanks
Email: 
tom.shanks@durham.ac.uk
Institution: 
Durham University
Instrument: 
CTIO 4m DECam
Organization: 
Chile
Total Program Time: 
8
Total Times Time Observed Time Engineering Time lost technical Time lost weather Time lost other Total Program Time
2021-01-31 6.0 0.0 0.0 2.0 0.0 8