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Old 26-03-2010, 08:20 AM
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mithrandir (Andrew)
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Join Date: Jan 2009
Location: Glenhaven
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H,
Quote:
Originally Posted by Octane View Post
Yeah, no doubt -- but, there's stuff in there that anyone can take away and use. For example, the whole screenshot and composition techniques.
I'm not disputing that. When learning to swim you don't jump in the open ocean.

Quote:
Originally Posted by Octane View Post
Also, people like Jase use 10% overlaps, from memory. You don't want such a large overlap that the blending become really visible due to having more data in the overlapping regions, and, what not. I've never done an astro one so I might be wrong, but, am going by terrestrial experience.
I'd have to ask what it is you are using to do your stitching. I've used Autostitch - from where it all began - and have Autopano.

Autopano does field curvature corrections for the focal length of the lens. It then picks out common points to overlay the frames. Depending on the subject you might need more overlap to get good matches. When it renders you can choose the blend options and it deals with modest changes in light levels.

My Warrumbungles shot here http://www.iceinspace.com.au/forum/s...57&postcount=1 has about 50% overlap between frames. There is about a minute between shooting the leftmost and rightmost edge.

The only real complaint with it is it doesn't handle FITS, but you'd have to debayer or stack your mono frames first anyway.

Andrew
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