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Old 08-01-2022, 12:40 PM
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gregbradley
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Join Date: Feb 2006
Location: Sydney
Posts: 18,185
That surprised me. So sharp and detailed, it looks like it was taken with a large aperture scope. Super shot for a first time imaging it. The halo around Alnitak does not draw your attention and given observatory class instruments often have there halos you're in good company. I personally would not worry about it. I did develop a processing procedure in Photoshop to remove halos. It works some of the time and other times not. Your one is a bit tricky as its not out in dark spaces of the image but rather right over part of the object itself.

You could try using the burn and dodge tools to get that brighter part of the halo darkened slightly. That would be the most you could do. Or you could try some judicious use of the healing brush.

One minor point, the red colour of the Ha curtain seems,to my eye, to have a bit too much yellow in it. Trying reducing the yellow in reds using the select colour tool in Photoshop.

Greg.
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