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ENR CTIO Blanco 4-m 2023-08-25

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Date: 
Friday, August 25, 2023
Telescope: 
CTIO Blanco 4-m
Submitter: 
Javier Fuentes
Submitter Email: 
javier.fuentes@noirlab.edu
Observer Support: 
Hernan Tirado
Night Assistant: 
Alberto Alvarez
Also Present: 
Alfredo Zenteno
Problems: 

None.

Comments: 

We were able to observe the Dey and Schlegel's program the first half of the night under passing cirrus and stable seeing of 1", then we continued with Lin's program after midpoint. However, after 02:00 am, the cloud cover condition deteriorated forcing us to stop observing at 02:30 hours. We checked the satellite images and forecast provided by MeteoBlue, concluding that this condition will not change until the end of the night, so we call it a night at 05:00 am.  No problems reported.

Conditions: 
General Conditions
Comment: 
None.
1st Quarter
Clouds: 
Cirrus
Wind: 
Medium
Seeing Value: 
1.00
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky : 
1
2nd Quarter
Clouds: 
Cirrus
Wind: 
Medium
Seeing Value: 
0.90
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky: 
2
3rd Quarter
Clouds: 
Partially cloudy
Wind: 
Low
Seeing Value: 
1.30
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky: 
4
4th Quarter
Clouds: 
Overcast
Seeing Value: 
0.00
Seeing Variability: 
0
Sky: 
8
Program: 
Proposal: 
2023B-307896
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
Total Program Time: 
4.25
Proposal: 
2023B-662232
Target of Oportunity: 
No
Time Observed: 
1.75
Time Engineering: 
0.0
Time lost technical: 
0.0
Time lost weather: 
5.0
Time lost other: 
0.0
Total Program Time: 
6.75
Total Times Time Observed Time Engineering Time lost technical Time lost weather Time lost other Total Program Time
2023-08-25 6.0 0.0 0.0 5.0 0.0 11