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CTIO Home > ENR CTIO Blanco 4-m 2025-09-01

ENR CTIO Blanco 4-m 2025-09-01

Date: 
Monday, September 1, 2025
Telescope: 
CTIO Blanco 4-m
Submitter: 
Sean Points
Submitter Email: 
sean.points@noirlab.edu
Observer Support: 
Manuel Hernandez
Night Assistant: 
Claudio Aguilera
Also Present: 
Rodrigo Hinojosa, Gabriel P, Javier
Problems: 

Took calibrations for the Sifon program even though they are scheduled to start on 02 Sept.  This was done because the Sifon calibrations take at least 3hrs for a complete set.  It should not be scheduled during split nights.

Esteban - Can we leave darks running at the end of the night to be completed by ~08:30?  We would then only need to have somebody turn off the detectors when the darks complete.  We do not need the telescope drives or 4map on for this.  We will just leave the telescope parked at zenith.  We can discuss this tomorrow.

Marco - Under Exposure status disply, it states that the NF disk usage is 0.  Could you please look at this?

Comments: 

1) Tested guider at different positions. After an offset of 4 arcmin, the guide star was lost as expected.  We found a new guide star in less than 1 min.  Took exposures of 600s while guiding with no apparent elongation of the images.

2) Tested python DIQ script based on source extractor. It is functioning as expexcted

3) Tested command "tcs force_correction apply" from the command line with success.

4) Started donut tests
4a) Move to zenith and focus
4b)

Conditions: 
General Conditions
Comment: 
None.
1st Quarter
Clouds: 
Clear
Seeing Value: 
1.40
Seeing Variability: 
0.2
Seeing Source: 
CTIO Seeing monitor
Sky : 
0
2nd Quarter
Clouds: 
Clear
Seeing Value: 
1.40
Seeing Variability: 
0.2
Seeing Source: 
CTIO Seeing monitor
Sky: 
0
3rd Quarter
Clouds: 
Clear
Seeing Value: 
1.20
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky: 
0
4th Quarter
Clouds: 
Clear
Seeing Value: 
1.20
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky: 
0
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Program: 
Proposal: 
NEWFIRM Engineering
Target of Oportunity: 
No
Time Observed: 
0.0
Time Engineering: 
7.5
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 [1]
Institution: 
CTIO
Instrument: 
CTIO 4m Newfirm
Organization: 
NOAO
Total Program Time: 
7.5
Proposal: 
2025B-587252
Target of Oportunity: 
No
Time Observed: 
3.5
Time Engineering: 
0.0
Time lost technical: 
0.0
Time lost weather: 
0.0
Time lost other: 
0.0
Description: 
Narrow-Band H-alpha Survey of Massive Galaxy Clusters and Large-Scale Structure
Primary Investigator: 
Cristobal Sifon
Email: 
cristobal.sifon@pucv.cl [4]
Institution: 
PUCV
Instrument: 
CTIO 4m Newfirm
Organization: 
Chile
Total Program Time: 
3.5
Total Times Time Observed Time Engineering Time lost technical Time lost weather Time lost other Total Program Time
2025-09-01 3.5 7.5 0.0 0.0 0.0 11
Source URL (modified on 09/02/2025 - 07:24): http://www.ctio.noao.edu/noao/node/23117

Links
[1] mailto:sean.points@noirlab.edu
[2] http://www.ctio.noao.edu/noao/field-collection/field-nr-prog/44620/delete?destination=print/content/enr-ctio-blanco-4-m-2025-09-01
[3] http://www.ctio.noao.edu/noao/field-collection/field-nr-prog/44620/edit?destination=print/content/enr-ctio-blanco-4-m-2025-09-01
[4] mailto:cristobal.sifon@pucv.cl
[5] http://www.ctio.noao.edu/noao/field-collection/field-nr-prog/44621/delete?destination=print/content/enr-ctio-blanco-4-m-2025-09-01
[6] http://www.ctio.noao.edu/noao/field-collection/field-nr-prog/44621/edit?destination=print/content/enr-ctio-blanco-4-m-2025-09-01
[7] http://www.ctio.noao.edu/noao/field-collection/field-nr-prog/add/node/23117?destination=print/content/enr-ctio-blanco-4-m-2025-09-01