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M42, Prime Focus on LX200.jpg
M42, Prime Focus on LX200.jpg
kirbic


Photograph Information Photographer's Comments
Collection: Astrophotography
Camera: Canon EOS-5D
Location: Yanna research Station, south of madison, WI
Date: Oct 29, 2005
Aperture: f/10
ISO: 400
Shutter: 2 minutes
Galleries: Sky, Astrophotography
Date Uploaded: Oct 29, 2005

Viewed: 1293
Comments: 1
Favorites: 0

 3074mm focal length Meade 12" LX200 SCT with Canon 5D at prime focus.
This result is a bit underwhelming, given the comparison to the view thru an eyepiece. I'm not convinced that vibration had a huge effect, but certainly the detail rendered in this shot is inferior to what was there visually.
I heavily processed this shot using both USM and deconvolution (Focus Magic) to bring out as much detail as possible. This required me to also take steps to reduce chrominance noise, which was made worse by the heavy porcessing.
Overall, my opinion is... ick. We have more work to do on prime focus stuff!

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AuthorThread
 01/18/2006 01:55:58 PM
Kirbic, in retrospect, it's apparent to me that the problem with this image was the scope operating at f10. That's just too long of a focal ratio to get a decently exposed shot. Bring your focal reducer next time (or borrow one of YRS') and compare the same shot, same parameters at f6.3. I guarantee a better result!
  Photographer found comment helpful.


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