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ENR CTIO Blanco 4-m 2013-12-10

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Date: 
Tuesday, December 10, 2013
Telescope: 
CTIO Blanco 4-m
Submitter: 
Alex Kim
Submitter Email: 
agkim@lbl.gov
Observer Support: 
Hernan Tirado
Night Assistant: 
Alberto Alvarez
Also Present: 
LO, CC
Problems: 

We had a problem with extra light on the pre-calibrations and also start of the night zeropoint exposures (see screenshots on the referred entry). We then took 90 and 180 second dark frame, these looked normal. 

Telops figured out that it was that one of the Hydra comparison lamps was left on inside the chimney because they are trying to connect all the Hydra system. 


Morning standard and flat calibration images have pixel values of 100. Telops restarted sispi, and we restarted the postnight_zeros_flats.json. The exposures now appear reasonable.

 
Comments: 

None.

Conditions: 
General Conditions
Temperature Max: 
18.00
Temperature Min: 
13.00
Humidity Max: 
45
Humidity Min: 
33
Wind Speed Max: 
7.00
Wind Speed Min: 
1.00
Comment: 
None.
1st Quarter
Clouds: 
Clear
Wind: 
Low
Seeing Value: 
0.40
Seeing Variability: 
0.2
Seeing Source: 
CTIO Seeing monitor
Sky : 
0
2nd Quarter
Clouds: 
Clear
Wind: 
Low
Seeing Value: 
0.55
Seeing Variability: 
0
Seeing Source: 
CTIO Seeing monitor
Sky: 
0
3rd Quarter
Clouds: 
Clear
Wind: 
Low
Seeing Value: 
0.55
Seeing Variability: 
0
Seeing Source: 
CTIO Seeing monitor
Sky: 
0
4th Quarter
Clouds: 
Clear
Seeing Value: 
0.60
Seeing Variability: 
0.2
Seeing Source: 
CTIO Seeing monitor
Sky: 
0
Program: 
Proposal: 
2012B-0001
Target of Oportunity: 
No
Time Observed: 
5.25
Time Engineering: 
0.0
Time lost technical: 
2.0
Time lost weather: 
0.0
Time lost other: 
0.0
Description: 
DES
Primary Investigator: 
Frieman
Email: 
agkim@lbl.gov
Institution: 
DES
Instrument: 
CTIO 4m DECam
Organization: 
NOAO
Total Program Time: 
7.25
Total Times Time Observed Time Engineering Time lost technical Time lost weather Time lost other Total Program Time
2013-12-10 5.25 0.0 2.0 0.0 0.0 7.25