Hi Bojan,
Thanks for the information.
I have done some more, this time I have took a look how to find the distortion parameters. I used Hugin to do this work.
Here how I did this lens distortion updatet test:
http://www.astrofriend.eu/astronomy/...istortion.html
Still problem how to implement everything in AstroImageJ that my plan was to use. Maybe I at the end have to buy PixInsight, what I see there is a lot of opportunities to do special routines with macros, about the same as I do in AstroImageJ but more astro friendly. But I like open sourch software better.
/Lars