Date:
Monday, September 4, 2023
Telescope:
CTIO Blanco 4-m
Submitter:
Alfredo Zenteno
Submitter Email:
Observer Support:
Claudio Aguilera
Night Assistant:
Manuel Hernandez
Also Present:
Bernardita Ried, Alfredo Zenteno
Program:
Proposal:
2023B-307896
Target of Oportunity:
No
Time Observed:
6.25
Time Engineering:
0.0
Time lost technical:
0.0
Time lost weather:
4.0
Time lost other:
0.0
Description:
DECaLS extension
Primary Investigator:
Dey & Schlegel
Email:
Institution:
NOAO
Instrument:
CTIO 4m DECam
Organization:
NOAO
Total Program Time:
10.25
| Total Times | Time Observed | Time Engineering | Time lost technical | Time lost weather | Time lost other | Total Program Time |
|---|---|---|---|---|---|---|
| 2023-09-04 | 6.25 | 0.0 | 0.0 | 4.0 | 0.0 | 10.25 |
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20:11 (EVE -10) - 23:00; We didn't observe because there were too much clouds
23:00 - 1:45; Humidity was stable but we again lost connection with the weather station. The humidity was ok though. We open the telescope at 23:40 when there were less clouds. The first image was taken at 12:15 am. The seeing was 1.43 arcsec.
1:45 - 4:30; The observing went smooth and the seeing was stable into 1.35-1.39 arcsec. There were some cirrus clouds showing a bit.
4:30 - 7:15; We took data until 6:35 am, when the clouds were unavoidable. We should check the last images, the star tracker was not able to find the four references. The seeing was 1.46 arcsec.