From: "David Illig" <yag@davidillig.com>
Date: November 9, 2005 10:22:53 PM MST
To: Astro_IIDC@yahoogroups.com
Subject: Re: Camera for guiding
Alan Friedman wrote, inter alia:
Here is a recent image taken in poor seeing and stacked in Astro IIDC:
http://www.geocities.com/alanfgag/saturn_103005.jpg
The image is nasty - grainy and over processed - but I did take the time to compare the
automated Astro IIDC stacking with hand selection in KIS. The detail was identical either
way. Oddly, the KIS stacks (saved as 8 bit pict images) had a noisey interference pattern
which was very difficult to deal with - this did not occur in the stacks from Astro IIDC
which were saved as 16bit Tiff images.
Yes, but your worst is a lot better than practically everyone's best. I enjoyed your amazing
presentation at the Macintosh Astronomy Workshop and I have enjoyed seeing your
astrophotos on the Web. My wife says I am too hard on myself, but every time I make a
solar system image she says "That's great!" and I say "Yeah, but take a look at Alan
Friedman's Saturn (or whatever).
What you don't tell us is how many frames you typically capture, where you set the
confidence level, and how many frames your setting permits Astro IIDC to align and stack.
I know that that number can vary according to seeing, but some ballpark figures would
help me and perhaps some others who are trying to learn this art.
Thanks,
David