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ENR CTIO Blanco 4-m 2023-07-06

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Date: 
Thursday, July 6, 2023
Telescope: 
CTIO Blanco 4-m
Submitter: 
Sean Points
Submitter Email: 
Observer Support: 
Rodrigo Hernandez
Night Assistant: 
Claudio Aguilera
Also Present: 
Rolo, Omar, Marco (LS), Guillermo Damke and TVN crew (CT)
Problems: 

Still some problems with readout syncronization.  One example is in file focus_1404.fits.

Comments: 

(1) Rolo and Omar worked with CLaudio and dRodrigo to test guider "follow" mode.  Tests were successful.  They can submit a more complete report.
(2) Tested telescope focus offsets of filters JHKs, 1644, 2124, and 2168.  Offset direction (+/-) are in agreement with documentation prior to 2010.  Actual values have changed since we have changed the f/8 contols since then. J=0; H=+40; Ks=+80, 1644=+20, 2124=+65; 2168=+180.  All offsets with resppect to J focus.
(3) Telescope focus with J seems to follow same formula for f/8 instruments; as T increases focus decreases; 90 units per degree.
(4) Took some Galactic ceenter fields in Ks, 2124, and 2168.  Don't know how useful theey will be given cloud cover.
(5) Marco updated some observig scripts for better functionality.

Was a productive engineering run.  Once data are analyzed we should discuss plans for a Science Verification (SV) CfP.

Conditions: 
General Conditions
Comment: 
None.
1st Quarter
Clouds: 
Cirrus
Seeing Value: 
1.30
Seeing Variability: 
0.4
Seeing Source: 
CTIO Seeing monitor
Sky : 
1
2nd Quarter
Clouds: 
Partially cloudy
Seeing Value: 
1.50
Seeing Variability: 
0.8
Seeing Source: 
CTIO Seeing monitor
Sky: 
7
3rd Quarter
Clouds: 
Partially cloudy
Seeing Value: 
1.50
Seeing Variability: 
0.6
Seeing Source: 
CTIO Seeing monitor
Sky: 
7
4th Quarter
Clouds: 
Partially cloudy
Seeing Value: 
1.50
Seeing Variability: 
0.4
Seeing Source: 
CTIO Seeing monitor
Sky: 
7
Program: 
Proposal: 
NEWFIRM engineering
Target of Oportunity: 
No
Time Observed: 
0.0
Time Engineering: 
11.25
Time lost technical: 
0.0
Time lost weather: 
0.0
Time lost other: 
0.0
Description: 
NEWFIRM engineering
Primary Investigator: 
Sean Points
Institution: 
CTIO
Instrument: 
CTIO 4m Newfirm
Organization: 
NOAO
Total Program Time: 
11.25
Total Times Time Observed Time Engineering Time lost technical Time lost weather Time lost other Total Program Time
2023-07-06 0.0 11.25 0.0 0.0 0.0 11.25