Image Processing Lesson

Graphic artist Ray Fox on the views_thru_the-eyepiece group suggested that my original H-a image of NGC 1893 was clipped and that I should emphasize the midtone ranges. I followed Ray’s advice and the result was impressive. I had thrown away a lot of signal in the original processing! Thanks Ray!

Side-by-side comparisons with histograms at
http://home.att.net/~dpersyk/new.htm

I welcome comments from everyone. Thanks for looking.

Clear skies,

Dennis Persyk
Igloo Observatory Home Page http://dpersyk.home.att.net
Hampshire, IL

Wow! What a difference, Dennis.
I'm always amazed at what can teased and tweaked out of an image. Gathering those photons is hard enough, we sure don't want to throw any of them away.

dan kowall