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Originally Posted by philiphart
Thanks for the example Bert.
How much better do you think the drizzled result is than if you had just resampled the un-drizzled data to the same resolution? It looks like you'd get a similar result just through interpolation. Not sure how much more is being achieved by the drizzling?
Phil
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This example from DSS explains it well:
http://deepskystacker.free.fr/english/technical.htm
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What and when you need to use the drizzle option
Basically you need only to have a lot of images which must not be perfectly aligned (a few pixels drift is enough).
It makes no sense to drizzle if you have only a few light frames.
Drizzling is particularly good at enhancing the resolution so it is very useful when shooting small objects with a short focal length.
On the right is a example of an almost unprocessed M57 (shot using a 10", F/D 4.72 OTA with a Canon DSLR).
Usually M57 is very small, but by using a 2x drizzle and around 100 light frames the resulting image is twice bigger and the resolution is much better.
Mouse over to see the
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Hold the mouse over the 2 links to see the difference.