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ENR CTIO Blanco 4-m 2025-02-09

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Date: 
Sunday, February 9, 2025
Telescope: 
CTIO Blanco 4-m
Submitter: 
Ishida Ko
Submitter Email: 
ko.ishida@astr.tohoku.ac.jp
Observer Support: 
Hernan Tirado
Night Assistant: 
Alberto Pasten
Also Present: 
Sean Points, Ronaldo Laishram
Problems: 

at 6 a.m. focus loss due to high airmass

Comments: 

None.

Conditions: 
General Conditions
Comment: 
None.
1st Quarter
Clouds: 
Cirrus
Seeing Value: 
1.60
Seeing Variability: 
0.4
Seeing Source: 
CTIO Seeing monitor
Sky : 
3
2nd Quarter
Clouds: 
Clear
Seeing Value: 
0.80
Seeing Variability: 
0
Seeing Source: 
CTIO Seeing monitor
Sky: 
0
3rd Quarter
Clouds: 
Clear
Seeing Value: 
0.40
Seeing Variability: 
0
Seeing Source: 
CTIO Seeing monitor
Sky: 
0
4th Quarter
Clouds: 
Clear
Seeing Value: 
0.40
Seeing Variability: 
0
Seeing Source: 
CTIO Seeing monitor
Sky: 
0
Program: 
Proposal: 
687483
Target of Oportunity: 
No
Time Observed: 
0.0
Time Engineering: 
0.0
Time lost technical: 
0.0
Time lost weather: 
0.0
Time lost other: 
0.0
Description: 
Characterizing the proto-supercluster with QSO clustering at z=2.23
Primary Investigator: 
Ko Ishida
Email: 
ko.ishida@astr.tohoku.ac.jp
Institution: 
Tohoku University
Instrument: 
CTIO 4m Newfirm
Organization: 
N/A
Total Program Time: 
0
Total Times Time Observed Time Engineering Time lost technical Time lost weather Time lost other Total Program Time
2025-02-09 0.0 0.0 0.0 0.0 0.0 0