Star core grafitti

[headdown]

Hi everyone,

I am a Pixinsight newbie running deconvolution for one of the first times and I am having good and bad luck.  Good because it does a great job once dialed in...it's like adaptive optics after the fact. Very impressed with how it sharpens the image.  I am however having a problem with the brightest star cores having weird bright yellow squiggles through them.  See the enlarged preview in the attached screenshot.  The preview is very blown out as it is an HDR image that has not yet had HDR Multi scale transform applied, but you can see the bright yellow squiggles in 2 of the cores at bottom center. The settings I used are visible on the right. If anyone can tell me how to avoid these artifacts I would be very grateful.  And yes I just noticed it is titled M31...it was a late night last night...

Dean

https://www.dropbox.com/s/x9yuievl25kzjoj/Screen%20Shot%202016-07-21%20at%209.03.16%20PM.png?dl=0

[Alejandro Tombolini]

Hi Dean,
If you mask the brightest stars cores you can avoid it to happens. Other way could be to make Deconvolution in each channel. If you inspect the channels where the yellow is present, you will see that the blue channel has a darker area. See this processing example with a similar case.
Saludos, Alejandro.

[jkmorse]

Dean,

As Alejandro says, getting your masks set right is key, especially for the brightest stars.  Take a look at this post where I set out the decon method I have worked up thanks to some great resources, which has a lot of information on the different masks:  http://pixinsight.com/forum/index.php?action=profile;area=showposts;u=8962

If you think it would help, I also have a free PI workbook that a share with others.  If you are interested, just drop me a line at jkmorse57@gmail.com and I will send you the latest version (Rev 40).

Best,

Jim