From: "John" <jbuckley1@mac.com>
Date: June 11, 2010 9:59:45 AM MDT
To: Astro_IIDC@yahoogroups.com
Subject: Re: NGC 4565 Gradient removal
Hi Milton,
Very nicely done. The reprocessed image looks much better than the previous version. I am interested to see the nature of the original gradient. Do you have a gradient challenged "before" to go with your after?
Thanks,
John B
--- In Astro_IIDC@yahoogroups.com, "milton_aupperle" <milton@...> wrote:
I've been reprocessing a bunch of DSO images to test out the new Gradient removal code, and also improve them.
As an example, here is my original version of NGC 4565:
http://www.outcastsoft.com/AstroImages/NGC4565_MJA_20100307.jpg
Because of the gradient, I lowered the background to hide it, which darkens everything out.
Here is the new version which has gradient removal applied:
http://groups.yahoo.com/group/Astro_IIDC/files/DSO/NGC4565_20100306.jpg
Because this suppressed the gradient to minimal amounts, I could stretch the image a lot further.