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Old 29-10-2009, 10:33 AM
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Merlin66 (Ken)
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Merlin66 is offline
 
Join Date: Oct 2005
Location: Junortoun Vic
Posts: 8,927
White light solar observing filters

I tried all the filters in my box - all the coloured from light blue to red, all the LPR ones and all the narrow band Hbeta/ OIII/ Ha etc trying to find the "best" filter to improve the contrast while viewing in white light.... and the winner is.......The Baader Solar Continuum filter! It does what it says on the box - improved VISUAL contrast. A green filter comes a close second. I now have both the 1.25" and the 2". Just fit it to the nosepiece of the diagonal and forget.
(Doesn't do that much for imaging..... a small pixel camera (DMK21) and a f ratio >30 works MUCH better)
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