From: alan@greatarrow.com

Date: April 17, 2008 11:57:00 AM MDT

To: Astro_IIDC@yahoogroups.com

Subject: Re: [Astro_IIDC] Re: Stacking Images

Reply-To: alan@greatarrow.com


Correct. You will need to copy and paste the alignment region in a program like adobe PS. 


Alan 

Sent from my Verizon Wireless BlackBerry


-----Original Message-----

From: "dean_drumheller" <drumhellerd@smccd.edu>


Date: Thu, 17 Apr 2008 17:46:09 

To:Astro_IIDC@yahoogroups.com

Subject: [Astro_IIDC] Re: Stacking Images



Thanks, so when I choose say 4 alignment points, I'm always creating 

4 images, not 4 points to be used in creating one final image, using 

those 4 points ? Each time, I'm combining all images in the file 

using one alignment point. Appreciate help learning the software. Dean


--- In Astro_IIDC@yahoogro <mailto:Astro_IIDC%40yahoogroups.com> ups.com, Milton Aupperle <milton@...> wrote:


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

milton@...

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@yahoogro <mailto:Astro_IIDC%40yahoogroups.com> ups.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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