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CTIO Home > ENR CTIO Blanco 4-m 2025-05-26

ENR CTIO Blanco 4-m 2025-05-26

Date: 
Monday, May 26, 2025
Telescope: 
CTIO Blanco 4-m
Submitter: 
Yifei Luo
Submitter Email: 
yifeiluo@lbl.gov
Observer Support: 
Alfredo Zenteno
Night Assistant: 
Claudio Aguilera
Also Present: 
Jaime Forero, Manuel Hernandez, Rodrigo Hernandez, Adam Myers
Problems: 

1. In the begining of the night we turned on the "start ETC" on SISPI and decbot. The guider was working for the first exposure, but failed when the second exposure started. The first exposure was delivered to observer2 but not synced to observer4. We restarted SISPI and solved the observer4 sync issue.

2. We then turned on the "start ETC" on SISPI, and manually added two 60s r-band test exposures. The guider was working for the first exposure but still stopped for the second exposure. We restarted SISPI again without turning on the "start ETC", and this time the guider did not fail for two 60s test exposures. We then started the decbot (still without "start ETC") to fill the queue, and the guider was working stably before we got passing clouds.

3. We found that the guider images are stored under observer4:/home3/guider_nfs/ETC, but the organization differs from previous runs, which may or may not be related to the guider issue we have.

Comments: 

None.

Conditions: 
General Conditions
Comment: 
None.
1st Quarter
Clouds: 
Thin Clouds
Wind: 
Low
Seeing Value: 
3.00
Seeing Variability: 
0.4
Seeing Source: 
CTIO Seeing monitor
Sky : 
2
2nd Quarter
Clouds: 
Partially cloudy
Wind: 
Low
Seeing Value: 
2.50
Seeing Variability: 
0.4
Seeing Source: 
CTIO Seeing monitor
Sky: 
2
3rd Quarter
Clouds: 
Thin Clouds
Wind: 
Low
Seeing Value: 
3.00
Seeing Variability: 
0.6
Seeing Source: 
CTIO Seeing monitor
Sky: 
2
4th Quarter
Clouds: 
Partially cloudy
Wind: 
Low
Seeing Value: 
2.50
Seeing Variability: 
0.4
Seeing Source: 
CTIO Seeing monitor
Sky: 
5
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Program: 
Target of Oportunity: 
No
Time Observed: 
1.0
Time Engineering: 
0.0
Time lost technical: 
0.25
Time lost weather: 
10.75
Time lost other: 
0.0
Description: 
IBIS survey
Primary Investigator: 
Arjun Dey
Email: 
arjun.dey@noirlab.edu [1]
Institution: 
NOIRLab
Instrument: 
CTIO 4m DECam
Organization: 
NOAO
Total Program Time: 
12
Total Times Time Observed Time Engineering Time lost technical Time lost weather Time lost other Total Program Time
2025-05-26 1.0 0.0 0.25 10.75 0.0 12
Source URL (modified on 05/27/2025 - 04:40): http://www.ctio.noao.edu/noao/node/22809

Links
[1] mailto:arjun.dey@noirlab.edu
[2] http://www.ctio.noao.edu/noao/field-collection/field-nr-prog/44416/delete?destination=print/content/enr-ctio-blanco-4-m-2025-05-26
[3] http://www.ctio.noao.edu/noao/field-collection/field-nr-prog/44416/edit?destination=print/content/enr-ctio-blanco-4-m-2025-05-26
[4] http://www.ctio.noao.edu/noao/field-collection/field-nr-prog/add/node/22809?destination=print/content/enr-ctio-blanco-4-m-2025-05-26