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ENR CTIO Blanco 4-m 2026-01-05

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Date: 
Monday, January 5, 2026
Telescope: 
CTIO Blanco 4-m
Submitter: 
Guillermo Damke
Submitter Email: 
guillermo.damke@noirlab.edu
Observer Support: 
Manuel Hernandez
Night Assistant: 
Claudio Aguilera
Also Present: 
Rodrigo Hinojosa
Problems: 

None.

Comments: 

A very smooth engineering night, with seeing values as low as 0.7 arcsec for some parts of the night! The seeing monitor reached 0.4 arcsec!

During the first 3.5 hours, we took two sets of exposures for a range of exposure times and co-adds at zenith and declination -75, intended for photometric measurements by Sean.

Next, we observed many focus sequences, ranging from dec +30 to -80 deg, in steps of 10 deg along the meridian. Additionally, we took sequences for HA={-1,-2,-3,-4} hours at dec=-30 deg. Seeing was stable during these sequences and around 0.8 arcsec too.

Conditions: 
General Conditions
Comment: 
None.
1st Quarter
Clouds: 
Clear
Wind: 
Low
Seeing Value: 
0.80
Seeing Variability: 
0
Seeing Source: 
The Telescope I used
Sky : 
0
2nd Quarter
Clouds: 
Clear
Wind: 
Low
Seeing Value: 
0.80
Seeing Variability: 
0
Seeing Source: 
The Telescope I used
Sky: 
0
3rd Quarter
Clouds: 
Clear
Wind: 
Medium
Seeing Value: 
0.80
Seeing Variability: 
0
Seeing Source: 
The Telescope I used
Sky: 
0
4th Quarter
Clouds: 
Clear
Wind: 
Low
Seeing Value: 
0.90
Seeing Variability: 
0
Seeing Source: 
The Telescope I used
Sky: 
0
Program: 
Proposal: 
newfirm_default
Target of Oportunity: 
No
Time Observed: 
0.0
Time Engineering: 
8.0
Time lost technical: 
0.0
Time lost weather: 
0.0
Time lost other: 
0.0
Description: 
Newfirm engineering
Primary Investigator: 
G. Damke
Email: 
guillermo.damke@noirlab.edu
Institution: 
CTIO
Instrument: 
CTIO 4m Newfirm
Organization: 
NOAO
Total Program Time: 
8
Total Times Time Observed Time Engineering Time lost technical Time lost weather Time lost other Total Program Time
2026-01-05 0.0 8.0 0.0 0.0 0.0 8