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 [1]
Institution:
Fermilab
Instrument:
CTIO 4m DECam
Total Program Time:
10.25
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.