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CTIO Home > ENR CTIO Blanco 4-m 2026-02-22

ENR CTIO Blanco 4-m 2026-02-22

Date: 
Sunday, February 22, 2026
Telescope: 
CTIO Blanco 4-m
Submitter: 
Eshwar Puvvada
Submitter Email: 
epuvvada@purdue.edu
Observer Support: 
Hernan Tirado
Night Assistant: 
Roberto Aviles
Also Present: 
TZ Tang, K. Boutsia, Arjun Dey
Problems: 

Issues with the Keeper connection on observer4 - similar to what happened on Friday. Keeper was getting disconnected every hour (approx) and we had to wait at least 30min before being able to reestablish connection. One of the errors appearing on the screen was "The network connection to the Keeper connection manager server appears unstable". 

In the meantine KBoutsia was loading the json files from her personal keeper connection sharing the screen with the observer. We also tried to switch to the laptop but the json files were not present - in order to use the laptop we had to run a gitpull in the DECAT directory.  No observing time was lost, since the queue usually had 1hr worth of json files loaded. 

No Keeper issues in the 2nd half. Connection was stable througout the rest of the night

Comments: 

None.

Conditions: 
General Conditions
Temperature Max: 
20.00
Temperature Min: 
17.00
Humidity Max: 
58
Humidity Min: 
43
Wind Speed Max: 
3.00
Wind Speed Min: 
1.00
Comment: 
None.
1st Quarter
Clouds: 
Clear
Seeing Value: 
0.85
Seeing Variability: 
0.2
Seeing Source: 
CTIO Seeing monitor
Sky : 
0
2nd Quarter
Clouds: 
Clear
Seeing Value: 
0.80
Seeing Variability: 
0.2
Seeing Source: 
CTIO Seeing monitor
Sky: 
0
3rd Quarter
Clouds: 
Clear
Seeing Value: 
0.90
Seeing Variability: 
0.2
Seeing Source: 
CTIO Seeing monitor
Sky: 
0
4th Quarter
Clouds: 
Clear
Seeing Value: 
0.90
Seeing Variability: 
0.2
Seeing Source: 
CTIO Seeing monitor
Sky: 
0
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Program: 
Proposal: 
2025A-388357
Target of Oportunity: 
No
Time Observed: 
4.5
Time Engineering: 
0.0
Time lost technical: 
0.0
Time lost weather: 
0.0
Time lost other: 
0.0
Description: 
Chasing Extremely Young Transients
Primary Investigator: 
Narayan, Rest
Email: 
gsn@illinois.edu [1]
Institution: 
University of Illinois Urbana-Champaign
Instrument: 
CTIO 4m DECam
Organization: 
NOAO
Total Program Time: 
4.5
Proposal: 
2023B-184194
Target of Oportunity: 
No
Time Observed: 
4.5
Time Engineering: 
0.0
Time lost technical: 
0.0
Time lost weather: 
0.0
Time lost other: 
0.0
Description: 
Efficiently mapping the z>2 Universe with Medium-Band Filters
Primary Investigator: 
Arjun Dey, David Schlegel
Email: 
arjun.dey@noirlab.edu [4]
Institution: 
NOIRLab
Instrument: 
CTIO 4m DECam
Organization: 
NOAO
Total Program Time: 
4.5
Total Times Time Observed Time Engineering Time lost technical Time lost weather Time lost other Total Program Time
2026-02-22 9.0 0.0 0.0 0.0 0.0 9
Source URL (modified on 02/23/2026 - 06:38): http://www.ctio.noao.edu/noao/content/ENR-CTIO-Blanco-4-m-2026-02-22

Links
[1] mailto:gsn@illinois.edu
[2] http://www.ctio.noao.edu/noao/field-collection/field-nr-prog/45056/delete?destination=print/node/23697
[3] http://www.ctio.noao.edu/noao/field-collection/field-nr-prog/45056/edit?destination=print/node/23697
[4] mailto:arjun.dey@noirlab.edu
[5] http://www.ctio.noao.edu/noao/field-collection/field-nr-prog/45057/delete?destination=print/node/23697
[6] http://www.ctio.noao.edu/noao/field-collection/field-nr-prog/45057/edit?destination=print/node/23697
[7] http://www.ctio.noao.edu/noao/field-collection/field-nr-prog/add/node/23697?destination=print/node/23697