20 January 2021: Soon to be released APP 1.083-beta2 : improved comet registration, updated tools, new Star Reducer Tool and more...
16 November 2020 - Wouter van Reeven has officially joined the Astro Pixel Processor Team as a moderator on our forum, welcome Wouter 🙂 !
31 July 2020 - Comet Registration video tutorial using APP 1.083-beta1 released.
30 July 2020 - APP 1.083-beta1 has been released introducing Comet processing! This 1st beta has comet registration. The stable release will also include special comet integration modes.
Hello
I have what is a common problem with many refractors: the red and green channels can be focused sharply, but some of the stars under the blue channel are significantly larger. I think what is happening is that even within the blue filter passband there is still significant dispersion, i.e. the color blue-green focuses ok, but the color blue-violet becomes out of focus. When viewing the blue image UNSTRETCHED, most of the stars are ok, and maybe only a little wider, but when viewing STRETCHED there is a significant blooming of some of the brighter stars. So then when I combine the images, the stars have a blue ring around them.
Anyway, is there a way to fix this in the program? I tried the checkbox of align stars, but that didn't help.
No indeed, halos are tricky. The light pollution correction may work a bit for very large halo's, but I think only when it's more of a gradient coming from just outside the frame for example.
I'm not talking about giant halos - it's just a few pixels worth.
Yes, so my example was for these more giant ones. There it would still work, for smaller ones there is no real solution yet.
Latest Post: Reference frame Our newest member: PAUL PICKERSGILL Recent Posts Unread Posts
