I think this is the tutorial I was following when I started doing deconvolution.
I'll need to refer to it again when next I go at it.....I could not do it now just off the top of my head.
astroimages.weebly.com/deconvolution.html
and then...
astroimages.weebly.com/deconvolution-pt-2.html
You may have seen this....if not....it certainly should get things on the right track.
Note: I always think twice about doing deconvolution....."do I really need it?" is a very important question for me. Sometimes if not 100% then I think it can leave things worse than where you started from!
Brendan.