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ENR CTIO Blanco 4-m 2014-09-15

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Date: 
Monday, September 15, 2014
Telescope: 
CTIO Blanco 4-m
Submitter: 
Basilio Santiago
Submitter Email: 
basilio.santiago@ufrgs.br
Observer Support: 
David James
Night Assistant: 
Alberto Alvarez
Also Present: 
Elmer Luque, Andres Plazas
Problems: 

None.

Comments: 

Clouds were present all night long, specially S and E, where most survey observations were carried out. Seeing started above 2" but decreased with time, reaching 1" level by 03:00 local time. Wind increased steadly during the night. Louver dome windows were closed at 0:15 local time. Dome windscreens were raised at 3:45 local time.

Conditions: 
General Conditions
Comment: 
None.
1st Quarter
Clouds: 
Thin Clouds
Wind: 
Low
Seeing Value: 
1.50
Seeing Variability: 
0.4
Seeing Source: 
Other
Sky : 
4
2nd Quarter
Clouds: 
Thin Clouds
Wind: 
Medium
Seeing Value: 
1.30
Seeing Variability: 
0.2
Seeing Source: 
Other
Sky: 
4
3rd Quarter
Clouds: 
Clear
Wind: 
Medium
Seeing Value: 
1.30
Seeing Variability: 
0.2
Seeing Source: 
Other
Sky: 
4
4th Quarter
Clouds: 
Thin Clouds
Wind: 
Medium
Seeing Value: 
1.00
Seeing Variability: 
0.2
Seeing Source: 
Other
Sky: 
4
Program: 
Proposal: 
2012B-0001
Target of Oportunity: 
No
Time Observed: 
10.25
Time Engineering: 
0.0
Time lost technical: 
0.0
Time lost weather: 
0.0
Time lost other: 
0.0
Description: 
Dark Energy Survey
Primary Investigator: 
Joshua Frieman
Email: 
frieman@fnal.gov
Institution: 
Fermilab
Instrument: 
CTIO 4m DECam
Total Program Time: 
10.25
Total Times Time Observed Time Engineering Time lost technical Time lost weather Time lost other Total Program Time
2014-09-15 10.25 0.0 0.0 0.0 0.0 10.25