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ENR CTIO Blanco 4-m 2017-11-10

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Date: 
Friday, November 10, 2017
Telescope: 
CTIO Blanco 4-m
Submitter: 
John Moustakas
Submitter Email: 
jmoustakas@siena.edu
Observer Support: 
Alistair Walker
Night Assistant: 
Hernan Tirado
Also Present: 
Claudio Aguilera, Megan Poremba, Coley Stillman
Problems: 

None, but see comments.

Comments: 
  • Unusual saturation artifact on CCD N15. Disappeared for ~15 exposures at the beginning of the night, and then returned. No evidence of cross talk on CCD N8.
  • Dome warning alarm briefly triggered during exposure 695065.  No vignetting occurred.
  • Occassional ~large (>10 arcsec) changes in pointing accuracy, both in RA and Dec.  These were corrected easily enough but there did not appear to be a predictable pattern.
  • The Observer Console GUI slowed, hung, and then crashed several times tonight. No time was lost, however.
Conditions: 
General Conditions
Temperature Max: 
20.00
Temperature Min: 
15.00
Humidity Max: 
35
Humidity Min: 
20
Wind Speed Max: 
12.00
Wind Speed Min: 
0.00
Comment: 
None.
1st Quarter
Clouds: 
Clear
Wind: 
Low
Seeing Value: 
0.90
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky : 
0
2nd Quarter
Clouds: 
Clear
Seeing Value: 
0.90
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky: 
0
3rd Quarter
Clouds: 
Clear
Seeing Value: 
0.90
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky: 
0
4th Quarter
Clouds: 
Clear
Seeing Value: 
0.90
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky: 
0
Program: 
Proposal: 
2014B-0404
Target of Oportunity: 
No
Time Observed: 
7.75
Time Engineering: 
0.0
Time lost technical: 
0.0
Time lost weather: 
0.0
Time lost other: 
0.0
Description: 
DECam Legacy Survey
Primary Investigator: 
David Schlegel
Email: 
djschlegel@lbl.gov
Institution: 
U.Berkeley
Instrument: 
CTIO 4m DECam
Organization: 
N/A
Total Program Time: 
7.75
Total Times Time Observed Time Engineering Time lost technical Time lost weather Time lost other Total Program Time
2017-11-10 7.75 0.0 0.0 0.0 0.0 7.75