[Placidus (Mike and Trish)]

Lee, the RGB stars are astonishingly good.

How, algorithmically, did you get rid of the NB stars? Did you produce a "starless" version and then add the RGB stars?

I'm yet to find an algorithm (such as "use bipolynomial regression on the Winzorised background to interpolate what's under the stars, starting at 0.73 FWHM from centre of star, with a 1.5 FWHM feather", as opposed to "use Bloggs's Photoshop Action" , or "Use Smythe's Pixinsight Process", that does it at all well.

Will understand if it is a secret.

Best,
Mike