Star alignment issue

[FunTomas]

To this time I never have problem with image registration. Now I have set of comet Johnson images, that I cannot register using star registration module. I have used default settings. Later tried to change log sensitivity or other parameters. Still the same result. Sample images are stored on endor file server.

Comet Johnson sample files

Please help, if anybody knows.

[Juan Conejero]

The problem with these frames is high noise and hot pixel artifacts. Increase the noise reduction parameter (Star Detection section) to 3 and the images register without problems with default parameters.

[FunTomas]

Juan, thank You very much. Next time I will try this parameter too.