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ENR CTIO Blanco 4-m 2025-01-12

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Date: 
Sunday, January 12, 2025
Telescope: 
CTIO Blanco 4-m
Submitter: 
Chow-Choong Ngeow, Chien-Hsiu Lee
Submitter Email: 
cngeow@astro.ncu.edu.tw
Observer Support: 
None
Night Assistant: 
Roberto Aviles
Also Present: 
Wilson Liu
Problems: 

Some exposure were not taken due to either out of limit (e.g. too north) or the bright sky (presense of thin cloud + Moon), have to skip some long exposure images.

Also, because of high and fluctuating humidity, observation stopped around 3:15 local time.

Comments: 

None.

Conditions: 
General Conditions
Comment: 
None.
1st Quarter
Clouds: 
Thin Clouds
Precipitation: 
High Humidity
Wind: 
Low
Seeing Value: 
1.40
Seeing Variability: 
0.6
Seeing Source: 
CTIO Seeing monitor
Sky : 
4
2nd Quarter
Clouds: 
Thin Clouds
Precipitation: 
High Humidity
Wind: 
Low
Seeing Value: 
1.40
Seeing Variability: 
0.4
Seeing Source: 
CTIO Seeing monitor
Sky: 
3
3rd Quarter
Clouds: 
Thin Clouds
Precipitation: 
High Humidity
Wind: 
Low
Seeing Value: 
1.00
Seeing Variability: 
0.2
Seeing Source: 
CTIO Seeing monitor
Sky: 
5
4th Quarter
Clouds: 
Cirrus
Precipitation: 
High Humidity
Wind: 
Low
Seeing Value: 
1.00
Seeing Variability: 
0.2
Seeing Source: 
CTIO Seeing monitor
Sky: 
2
Program: 
Proposal: 
2024B-893855
Target of Oportunity: 
No
Time Observed: 
5.5
Time Engineering: 
0.0
Time lost technical: 
0.0
Time lost weather: 
2.0
Time lost other: 
0.0
Description: 
Attacking the critical systematics in the next generation of low-redshift SNIa cosmology
Primary Investigator: 
Dillon Brout
Email: 
dbrout@bu.edu
Institution: 
NOAO
Instrument: 
CTIO 4m DECam
Organization: 
NOAO
Total Program Time: 
7.5
Total Times Time Observed Time Engineering Time lost technical Time lost weather Time lost other Total Program Time
2025-01-12 5.5 0.0 0.0 2.0 0.0 7.5