From: "Eric" <eddot1103a@mindspring.com>

Date: July 26, 2006 5:34:50 PM MDT

To: <Astro_IIDC@yahoogroups.com>

Subject: Archimedes final and comparison

Hi guys,

Well, I've extracted about as much detail as I'm going to for this composite.  I have posted comparison images.  On the left, is the original 415 stacked images composite using 5 alignment points.  The right image is the same number of stacked images (415), but alignment points were increased to 17.  If you look carefully, there is definite improvement, although mostly subtle:

  http://www.mindspring.com/%7Eastro4565/Archimedescomparison.jpg

I was never able to improve the interior craters because the contrast wasn't enough to cause the software to align on for a stack.  I also ended up using a Win program called Iris to do the 17 points, although the initial image on the left was aligned in IIDC.  I think the lack of contrast and noise levels caused IIDC to eliminate about half of the stacked frames.  

Eric