From: Milton Aupperle <milton@outcastsoft.com>
Date: April 17, 2008 11:32:10 AM MDT
To: Astro_IIDC@yahoogroups.com
Subject: Re: [Astro_IIDC] Re: Stacking Images
Dean;
It depends.
If I have mediocre seeing, sometimes I pick multiple areas because I can't predict whether I will get good matches or not. So I pick several areas in case the "boiling" turbulence causes fewer frames to be selected at say "High" matching tolerances than I want. Then I use the text log file to see how many frames were actually use din the stack and pick which one fits my needs best.
People like Alan Friedman do fine aligns on specific areas of the image and then cut and paste the portions around them to make a merged mosaic. I rarely have skies that good to bother with that sort of thing.
I know that some app will try to re-assemble the selection areas into a unified image, but my and other's experience with it is that it only works under extremely good seeing. Otherwise you wind up with mismatched areas and very obvious joins under average seeing conditions.
Hope That Helps..
Milton J. Aupperle
President
ASC - Aupperle Services and Contracting
Mac Software (Drivers, Components and Application) Specialist
#1005 - 815 14th Avenue. S.W.
Calgary Alberta T2R0N5
1-(403)-229-9456
www.outcastsoft.com
On 17-Apr-08, at 11:20 AM, dean_drumheller wrote:
Is there an advantage to choosing more than one alignment point?
Thanks, Dean--- In Astro_IIDC@yahoogroups.com, Milton Aupperle
<milton@...> wrote:
Dear Dean;
On 17-Apr-08, at 9:12 AM, dean_drumheller wrote:
After running an align & stack procedure, the result is 4 images
instead of one. I'm choosing
four alignment points manually. What are the 4 images the
result
of? How do I change
settings to combine these four images ?
There is no combination of the resulting stacks. Astro IIDC creates
a
stacked image for each alignment area you selected.
Hope That Helps..
Milton J. Aupperle
President
ASC - Aupperle Services and Contracting
Mac Software (Drivers, Components and Application) Specialist
#1005 - 815 14th Avenue. S.W.
Calgary Alberta T2R0N5
1-(403)-229-9456
milton@...
www.outcastsoft.com
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