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ENR CTIO Blanco 4-m 2025-06-10

Date: 
Tuesday, June 10, 2025
Telescope: 
CTIO Blanco 4-m
Submitter: 
Gautham Narayan (1st)/Matthew Penny (2nd)
Submitter Email: 
gsn@illinois.edu
Observer Support: 
Manuel Hernandez
Night Assistant: 
Claudio Aguilera
Also Present: 
Rodrigo Hernandez, Rodrigo Hinojosa
Problems: 

Lost 1st hour and twilight because of mirror airbag failure - mirror resting on hardpoints - restarted around 20:00 CLT/midnight UTC

Keeper disconnected at 00:19 UTC, new links needed, reconnected 00:26 UTC - queue continued without interruption while disconnected.

TCS stopped working during slew at 10:17 UTC, ending observations for the night.

Comments: 

None.

Conditions: 
General Conditions
Temperature Max: 
15.00
Temperature Min: 
12.00
Humidity Max: 
17
Humidity Min: 
15
Wind Speed Max: 
10.00
Wind Speed Min: 
3.00
Comment: 
None.
1st Quarter
Clouds: 
Clear
Wind: 
Low
Seeing Value: 
0.80
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky : 
0
2nd Quarter
Clouds: 
Clear
Wind: 
Low
Seeing Value: 
1.00
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky: 
0
3rd Quarter
Clouds: 
Clear
Wind: 
Medium
Seeing Value: 
1.00
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky: 
0
4th Quarter
Clouds: 
Clear
Seeing Value: 
1.20
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky: 
0
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Program: 
Proposal: 
2025A-388357
Target of Oportunity: 
No
Time Observed: 
9.75
Time Engineering: 
0.0
Time lost technical: 
1.75
Time lost weather: 
0.0
Time lost other: 
0.0
Description: 
Chasing Extremely Young Transients/DECAT
Primary Investigator: 
Gautham Narayan, Armin Rest
Email: 
gsn@illinois.edu [1]
Institution: 
University of Illinois at Urbana-Champaign
Instrument: 
CTIO 4m DECam
Organization: 
NOAO
Total Program Time: 
11.5
Total Times Time Observed Time Engineering Time lost technical Time lost weather Time lost other Total Program Time
2025-06-10 9.75 0.0 1.75 0.0 0.0 11.5
Source URL (modified on 06/11/2025 - 06:36): http://www.ctio.noao.edu/noao/content/ENR-CTIO-Blanco-4-m-2025-06-10

Links
[1] mailto:gsn@illinois.edu
[2] http://www.ctio.noao.edu/noao/field-collection/field-nr-prog/44443/delete?destination=print/node/22849
[3] http://www.ctio.noao.edu/noao/field-collection/field-nr-prog/44443/edit?destination=print/node/22849
[4] http://www.ctio.noao.edu/noao/field-collection/field-nr-prog/add/node/22849?destination=print/node/22849