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Old 03-12-2011, 10:17 AM
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avandonk
avandonk

avandonk is offline
 
Join Date: Aug 2005
Location: Melbourne
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Yes Fred see further down on this page

http://www.astrodon.com/Orphan/astro...arrowband/#h10


What About Using Narrowband Filters with Faster Optics?


Bert
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