From: Milton Aupperle <milton@outcastsoft.com>

Date: January 4, 2009 12:09:46 PM MST

To: Astro_IIDC@yahoogroups.com

Subject: Re: [Astro_IIDC] Image Stacking


Hi Dean;


On 4-Jan-09, at 1:06 AM, dean_drumheller wrote:


After choosing 3 alignment points manually, 3 separate images are created/saved.

Am I getting 3 different images, each aligned to one point only ?


Yes, except if you select MAP processing.


Is there an advantage in choosing 3 alignment points when only one is used ?


It depends on what your imaging and what stacking options you use.


For most planetary (except if your at like 7 meter focal lengths and the planet fills most of the FOV) , DSO  or star Clusters multiple areas selections aren't really needed.


If your doing Lunar / Solar imaging, you may want to check mark "Create blended MAP images from manually selected pixel areas." item when setting up your stacking options.


With MAP check marked, Astro IIDC will create a final image that blends the selection areas together. More details on MAP are described on page 32 of the Astro IIDC manual.


And the reason it keeps each stack is because some people prefer combining the images together manually in Photoshop.


Hope That Helps..


Milton Aupperle


Thanks, Dean