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Hi Jim, If you would like to share us your linear stacked data, I could have a go and see what I could offer. Cheers Richard Hi Rkonrad, Sorry about the late response. If you are still available, here is an image that I shot a few night ago. The large central star in ngc 2174 has a pretty big halo....

Hi happy-Kat, I posted also to the forum that I am a member of too (The Sky Searchers). Some posts mentioned what you hit on in your first reply. Possible bloating because of the extended Ha response. Also, some over-stretching exaggerated the problem. I appreciate the link. Some good and useful inf...

Hi Happy-kat, Thanks for the reply. I recently had the camera Ha modified by Lifepixel. They removed the stock IR filter and installed an Ha filter. I did not have a full spectrum mod ( I know that I would need a UV/IR cut filter for that). Possible bloating? Maybe, but I have shot several other tar...

I uploaded two images to Google Drive. One is the full tiff image that was used to crop the image in the original post. https://drive.google.com/file/d/1brvf2xFUVxs3ny0SuZazWxQamdRC9KgL/view?usp=sharing The second is a tiff from a drizzle stacked version what shows the star halo a bit more. https://...

Hi and Happy New Year! I see this effect sometimes in my images and I haven’t had success correcting it in Startools. Sometimes, the bright stars (maybe all, but less evident in the smaller stars) have gray halos surrounding them. It takes a lot of the snap out of the image because it gives a “blurr...