Date:
Monday, February 11, 2013
Telescope:
CTIO Blanco 4-m
Submitter:
Dey, Atlee
Submitter Email:
Observer Support:
Francisco Javier Rojas
Night Assistant:
Leonardo Paredes
Also Present:
Claudio Aguilera
Problems:
At start of night FORMAPS failed, then drive servos, then DECam software (probably OCS; but system got into a state where it needed to be shutdown and restarted), then observer1 computer crashed. Very eventful. But thanks to the excellent support, we were back on line in time for our main target field.
Program:
Proposal:
2013A-0351
Target of Oportunity:
No
Time Observed:
8.0
Time Engineering:
0.0
Time lost technical:
1.25
Time lost weather:
0.0
Time lost other:
0.0
Description:
Large scale structure in COSMOS field
Primary Investigator:
Dey
Email:
Institution:
NOAO
Instrument:
CTIO 4m DECam
Organization:
NOAO
Total Program Time:
9.25
| Total Times | Time Observed | Time Engineering | Time lost technical | Time lost weather | Time lost other | Total Program Time |
|---|---|---|---|---|---|---|
| 2013-02-11 | 8.0 | 0.0 | 1.25 | 0.0 | 0.0 | 9.25 |
Printer-friendly version
Good night with good seeing (~1" in U and g). We think that the image quality in long exposures (>10 min) would be better if the focus was tweaked to follow changed in the truss temperature during the observation. Currently, it seems like the focus is only adjusted at the start of an observation. We can see the focus / image quality slowly deteriorate over the duration of an exposure.