PixInsight Forum (historical)

PixInsight => General => Topic started by: RadOD on 2018 June 05 13:38:07

Title: Compare FWHM and eccentricity between center and periphery?
Post by: RadOD on 2018 June 05 13:38:07

Subframe selector allows comparison of FWHM/eccentricity between images, but is there a way to map their values within an image?   I am adjusting a field flattener spacing and I'm wondering if there is an objective way to do it.

Title: Re: Compare FWHM and eccentricity between center and periphery?
Post by: RickS on 2018 June 05 14:01:06

The FWHMEccentricity script can produce maps showing this.

Title: Re: Compare FWHM and eccentricity between center and periphery?
Post by: RadOD on 2018 June 05 15:51:31

Thanks!

This is fascinating!  This is sort of what I was expecting:
(https://s22.postimg.cc/fpnb4tpc1/FWHM.jpg)

But this is not! I don't know what to make of it yet...
(https://s22.postimg.cc/4rc1m8nrl/eccentricity.jpg)