Quote:
Originally Posted by multiweb
I think deconvolution works well when your image scale is around or under 1asp and your stars are "fat". CCDStack Devonvolution algo is great [most of the time]. Recently though I have been deconvoluting (very slightly) wide field pictures with already small stars. I have found that deconvolution on an already recombined color image can potentially damage the stars in the blue channel in particular for my QHY8. You get stars with a hole in the middle. The latest version of CCD Stack (v2) tends to do that on a color 32bits FITS file. Never had this problem before. Just found out because I had some troubles getting blue colors through in my latest shots with the ED80 and when looking at the blue channel in Photoshop most of the stars had litterally been punched out. Big black hole in the middle leaving only a ring but the green and red were just fine. .
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That's where you need to use the extended features in PixInsight's deconv routine like deringing and wavelets/noise
It does seem to be a black art though. From what I've read and meagre experience plenty of detail (oversampling) and lots of data is really required to get maximum benefit, otherwise you run the risk of highlighting noise in the subs.