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ENR CTIO Blanco 4-m 2013-05-10

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Date: 
Friday, May 10, 2013
Telescope: 
CTIO Blanco 4-m
Submitter: 
Kunder
Submitter Email: 
akunder@ctio.noao.edu
Observer Support: 
Mauricio Rojas
Night Assistant: 
Alberto Alvarez
Also Present: 
Andrea Kunder, Knut Olsen
Problems: 

We had one interlock failure that was fixed by pressing the "reset" button.
The telescope jumped in the image 205497

The observer console gui froze once and had to be refreshed

Nine of our images tonight failed to have any guide stars.  We were observing crowded fields.  When we decreased the guide exposure time, the guider seemed to improve a bit. But we still had problems especially in the brighter passbands.  It might be nice to have some parameters for observers to experiment with (besides the guide exposure time) like an isolation parameter.

We also noticed that the number of donuts was small (5-6) in some images.  We hope this did impact how well the AOS system was working.

Lastly, both the image health and quick reduce gave fwhm values in our crowded fields that were about 0.5" larger than what we observed from the stars stellar profile fit.  The seeing from image health and quick reduced suggested we were getting fwhm values of ~1.5"-2.0", but we checked every image by hand, and found fwhm values of 1.0"-1.3".  We were pleased to have such nice seeing tonight.

 

Comments: 

Great photometric night!

Conditions: 
General Conditions
Comment: 
None.
1st Quarter
Clouds: 
Clear
Wind: 
High
Seeing Value: 
1.60
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky : 
0
2nd Quarter
Clouds: 
Clear
Wind: 
High
Seeing Value: 
1.10
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky: 
0
3rd Quarter
Clouds: 
Clear
Wind: 
High
Seeing Value: 
1.70
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky: 
0
4th Quarter
Clouds: 
Clear
Wind: 
High
Seeing Value: 
1.10
Seeing Variability: 
0.2
Seeing Source: 
CTIO Seeing monitor
Sky: 
0
Program: 
Proposal: 
2013B-0719
Target of Oportunity: 
No
Time Observed: 
11.25
Time Engineering: 
0.0
Time lost technical: 
0.0
Time lost weather: 
0.0
Time lost other: 
0.0
Description: 
RRL in bulge
Primary Investigator: 
Saha
Email: 
saha@noao.edu
Institution: 
NOAO
Instrument: 
CTIO 4m DECam
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
2013-05-10 11.25 0.0 0.0 0.0 0.0 11.25