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ENR CTIO Blanco 4-m 2026-02-04

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Date: 
Wednesday, February 4, 2026
Telescope: 
CTIO Blanco 4-m
Submitter: 
Tomas Ahumada (1st half) / Ko Ishida (2nd half)
Submitter Email: 
ko.ishida@astr.tohoku.ac.jp
Observer Support: 
Hernan Tirado
Night Assistant: 
Roberto Aviles
Also Present: 
Rodrigo Hernandez, Sean Points
Problems: 

None.

Conditions: 
General Conditions
Comment: 
None.
1st Quarter
Clouds: 
Cirrus
Wind: 
Low
Seeing Value: 
1.20
Seeing Variability: 
0.4
Seeing Source: 
CTIO Seeing monitor
Sky : 
4
2nd Quarter
Clouds: 
Cirrus
Wind: 
Low
Seeing Value: 
1.40
Seeing Variability: 
0.4
Seeing Source: 
CTIO Seeing monitor
Sky: 
3
3rd Quarter
Clouds: 
Thin Clouds
Wind: 
Medium
Seeing Value: 
0.80
Seeing Variability: 
0.2
Seeing Source: 
CTIO Seeing monitor
Sky: 
1
4th Quarter
Clouds: 
Thin Clouds
Wind: 
Medium
Seeing Value: 
1.00
Seeing Variability: 
0.4
Seeing Source: 
CTIO Seeing monitor
Sky: 
2
Program: 
Proposal: 
2025B-716366
Target of Oportunity: 
No
Time Observed: 
4.25
Time Engineering: 
0.0
Time lost technical: 
0.0
Time lost weather: 
0.0
Time lost other: 
0.0
Description: 
NEWFIRM AEON observations
Primary Investigator: 
Tomas Ahumada
Email: 
tomas.ahumada@noirlab.edu
Institution: 
CTIO
Instrument: 
CTIO 4m Newfirm
Organization: 
NOAO
Total Program Time: 
4.25
Proposal: 
2025B-980446
Target of Oportunity: 
No
Time Observed: 
4.25
Time Engineering: 
0.0
Time lost technical: 
0.25
Time lost weather: 
0.0
Time lost other: 
0.0
Description: 
NEWFIRM narrow-band survey for 2QZ cluster
Primary Investigator: 
Ko Ishida
Email: 
ko.ishida@astr.tohoku.ac.jp
Institution: 
Tohoku University
Instrument: 
CTIO 4m Newfirm
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
2026-02-04 8.5 0.0 0.25 0.0 0.0 8.75