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ENR CTIO Blanco 4-m 2026-01-31

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Date: 
Saturday, January 31, 2026
Telescope: 
CTIO Blanco 4-m
Submitter: 
Sean Points (1st half) / Ko Ishida (2nd half)
Submitter Email: 
sean.points@noirlab.edu
Observer Support: 
Manuel Hernandez
Night Assistant: 
Claudio Aguilera
Also Present: 
Rodrigo Hinojosa
Problems: 

None.

Comments: 

First-half: Perfomred focus tests with JX, HX, KXs, 1644, 2124, and 2168 at various sky positions.  Tested command line observing scripts.

Conditions: 
General Conditions
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: 
Low
Seeing Value: 
1.10
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky: 
0
4th Quarter
Clouds: 
Clear
Wind: 
Low
Seeing Value: 
1.30
Seeing Variability: 
0.4
Seeing Source: 
The Telescope I used
Sky: 
0
Program: 
Proposal: 
NEWFIRM Engineering
Target of Oportunity: 
No
Time Engineering: 
4.25
Time lost technical: 
0.0
Time lost weather: 
0.0
Time lost other: 
0.0
Description: 
NEWFRM Engineering
Primary Investigator: 
Points
Email: 
sean.points@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: 
0.0
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: 
4.25
Total Times Time Observed Time Engineering Time lost technical Time lost weather Time lost other Total Program Time
2026-01-31 4.25 4.25 0.0 0.0 0.0 8.5