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I'm sure your local astronomy shop will stock suitable filters to fit the ED80.
These white light filters are pretty standard.
You can always make your own using the Baader solar film..works very well.
The webcam type solution ( ie an AVI and stack lots of frames) is ideal for the sun..you can hopefully freeze the seeing conditions due to to short exposure/ frame.
Stacking needs some visible detail...usually a sunspot will do the job.
(In my Ha images there's always plenty of filaments and surface detail to "lock" onto.)
Hope this helps.
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