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Old 02-12-2013, 08:55 PM
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strongmanmike (Michael)
Highest Observatory in Oz

strongmanmike is offline
 
Join Date: May 2006
Location: Canberra
Posts: 17,694
Quote:
Originally Posted by gregbradley View Post
If your camera and filters are clean and you don't suffer from vignetting it may actually make more sense to use a gradient handling processing routine like Gradient Xterminator, PixInsight Dynamic Background Extractor or StarTools to handle.
Even with a fairly small chip my 1.25" filters still vignette the steep F3.8 light cone slightly, so I have a full set of Astronomik LRGBHaSIIOIII 36mm filters on the way these will provide about 6 or 7mm more clear filter aperture, I recon this should do the trick Any residual vignetting gradients will most likely clean up with a touch of gradient removal. In the 4 months or so of imaging with my new Starlightxpress set up I have not seen a single dust donnut, even under the notoriously extreme stretching I do for my deep field comparisons

...this Sony chip puts us in a new era of imaging, the days of the noisy SBIGs with Kodak chips are loooong gone

Mike

Quote:
Originally Posted by tilbrook@rbe.ne View Post
Thanks Mike!

I guess that's the difference between a 12" with a quality CCD and an 8" with DSLR.
Still I'll have to try again on 1300, see what I can come up with.

Cheers,

Justin.
Good luck I am sure you will be successful Justin

Mike
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