Date:
Friday, September 2, 2022
Telescope:
CTIO Blanco 4-m
Submitter:
Guy Stringfellow
Submitter Email:
Observer Support:
Rodrigo Hernandez
Night Assistant:
Claudio Aguilera
Also Present:
Kathy Vivas, Ani Chiti, Mairead Heiger
Problems:
None.
Program:
Proposal:
2019A-0305
Target of Oportunity:
No
Time Observed:
5.5
Time Engineering:
0.0
Time lost technical:
0.0
Time lost weather:
0.0
Time lost other:
0.0
Description:
DELVE
Primary Investigator:
Alex Drlica-Wagner
Email:
Institution:
University of Chicago
Instrument:
CTIO 4m DECam
Organization:
NOAO
Total Program Time:
5.5
Proposal:
2020B-0253
Target of Oportunity:
No
Time Observed:
5.5
Time Engineering:
0.0
Time lost technical:
0.0
Time lost weather:
0.0
Time lost other:
0.0
Description:
DWF
Primary Investigator:
Jeff Cooke
Email:
Institution:
Swinburne University of Technology
Instrument:
CTIO 4m DECam
Total Program Time:
5.5
| Total Times | Time Observed | Time Engineering | Time lost technical | Time lost weather | Time lost other | Total Program Time |
|---|---|---|---|---|---|---|
| 2022-09-02 | 11.0 | 0.0 | 0.0 | 0.0 | 0.0 | 11 |
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At start of the night the guider alarm indicated no active CCDs. Seeing had a large jump from ~1.1" to 1.6". Inspection of image 1129120 showed donuts (out-of-focus). Images either side are ok. Alarm continued going off with same error a few times around this event, but images were all fine. Unclear what caused image 120 to be out of focus. Kathy Vivas assisted in the inspection of images and is aware. Also noted at time difference of ~7 minutes between the ring camer and the mountain top site camera, and UT clock is between the two and closer (but below) the ring camera time stamp.