Star halo effect

Questions and answers about processing in StarTools and how to accomplish certain tasks.
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Starry Eyes
Posts: 37
Joined: Fri Feb 08, 2013 3:55 pm

Star halo effect

Post by Starry Eyes »

So I have this colorful shot of Barnard 343. I would like to rein in the more extensive halo effect of the brighter stars. The usual magic and repair options seem inadequate for the job.

Image


See AstroBin for details about the picture.
The interesting diffraction effect is caused by an experimental two vane curved diagonal holder.

I looked at the post about separating stars and field stuff by using heal and masks There is a mention of a option of excluding a color while creating a mask, but I don't see it. If I do use color to select a mask it seems too exclusive. Hmmmm.. Any thoughts?
Alvinillo
Posts: 28
Joined: Tue May 13, 2014 7:24 pm

Re: Star halo effect

Post by Alvinillo »

I think I've got it with a coarse mask around blue stars and Filter module in 'Fringe Killer' mode. Note that you must pick samples several times to begin to note the effect.
Halos.jpg
Halos.jpg (279.34 KiB) Viewed 4693 times
Regards
Starry Eyes
Posts: 37
Joined: Fri Feb 08, 2013 3:55 pm

Re: Star halo effect

Post by Starry Eyes »

Thanks for tip. :thumbsup: I'm finding more options in the mask creation process that are helpful. I have relegated the experimental diagonal holder to the junk box and put in a 4 vane spider instead. Traditional it is and of course gives a symmetrical star pattern to work with.
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