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
Humidity was high and seeing was above 2" in the beginning. Both improved along the first half. Humidity waved back and forth during 3rd quarter and decrased in the end. Seeing slowly decreased with time, reaching 1.5" by end of 1st quarter and 1.0" at the end of the night. Wind increased in the 2nd half (dome louver windows were closed).