PixInsight Forum

PixInsight => General => Topic started by: nmontec on 2014 May 09 12:38:32

Title: Deconvolution...a black beast
Post by: nmontec on 2014 May 09 12:38:32
Hello All,

after being a while off PI and image processing, I'd like to go back and process some of the images I have got into my hard disk. I am becoming mad with deconvolution. I followed almost all the suggested tutorials, but still I can't get hold of it.
For instance this an image of mine of a galaxy before deconv.
before.jpg and after.jpg show you my poor results on the matter....
Title: Re: Deconvolution...a black beast
Post by: pfile on 2014 May 09 13:08:47
juan just posted a huge new tutorial on this. looks like you need to enable deringing.

http://pixinsight.com/examples/M81M82/index.html

rob
Title: Re: Deconvolution...a black beast
Post by: nmontec on 2014 May 09 13:42:53
Yes, that's what I did, trying the tutorial in front of my pc while processing mine. That was the result...  :-\
Title: Re: Deconvolution...a black beast
Post by: GJL on 2014 May 09 14:23:05
Perhaps this tutorial

http://mike-wiles.blogspot.de/2013/08/pixinsight-deconvolution.html


Gerhard
Title: Re: Deconvolution...a black beast
Post by: pfile on 2014 May 09 16:50:40
the thing is, the deringing parameters, etc. are heavily image dependent. in this case you need to increase the global dark deringing parameter - where it's set it's having no effect. if you increase it too much your output image will be completely corrupted. the challenge is to find the setting where deringing is accomplished and there are no artifacts in the image.

rob
Title: Re: Deconvolution...a black beast
Post by: nmontec on 2014 May 10 00:12:04
Thank you pfile-Rob :) Moving around the global dark deringing parameter did the job.    :)
Title: Re: Deconvolution...a black beast
Post by: Geoff on 2014 May 10 02:13:40
Let's see the result.