Date:
Wednesday, March 5, 2014
Telescope:
CTIO Blanco 4-m
Submitter:
Santiago Gonzalez
Submitter Email:
Observer Support:
Alberto Alvarez
Night Assistant:
Hernan Tirado
Problems:
UTC 2:00 Observer2 crashed. Restarted by Hernan. Immediately after this we note that the images taken during the crash were not in observer2: /home4/images/fits/program and also no new images taken were sent there. Hernan and Chris on the phone figured out that it was an "EXPOSURE SERVER" problem in SISPI, they tried to configure it and then finally SISPI was restarted. File began to get transferred again, and Chris 10 minutes later ensured that the missing files during the crash reappeard in observer2 (images 289904-289914), thanks!
UTC 03:26 and UTC 07:47 Shutter problem. Controller restart by Alberto. This time file missing started to be exposed right after automatically.
Program:
Proposal:
2014A-0608
Target of Oportunity:
No
Time Observed:
9.0
Time Engineering:
0.0
Time lost technical:
0.25
Time lost weather:
0.0
Time lost other:
0.0
Description:
Shock Breakout Detection with DECam: Real-Time Detection of Stellar Explosions
Primary Investigator:
Francisco Forster
Email:
Institution:
Universidad de Chile
Instrument:
CTIO 4m DECam
Organization:
Chile
Total Program Time:
9.25
| Total Times | Time Observed | Time Engineering | Time lost technical | Time lost weather | Time lost other | Total Program Time |
|---|---|---|---|---|---|---|
| 2014-03-05 | 9.0 | 0.0 | 0.25 | 0.0 | 0.0 | 9.25 |
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We have noted through this run that the DECam Exposure Time Calculator might be giving wrong limiting magnitudes estimates (or that we are doing something wrong but we can't figure out what). We thought that with 160s exposures in g we could reach 25,3 magnitudes with S/N=5 and New Moon. We actually find doing a quick photometry calculation that it is rather 24 mag. We note that we had a similar magnitude offset last year in u.