Quote:
Originally Posted by gregbradley
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.
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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
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.
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Good luck I am sure you will be successful Justin
Mike