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Old 23-11-2015, 04:10 PM
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John K
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Join Date: Sep 2005
Location: Melbourne
Posts: 1,468
Quote:
Originally Posted by Merlin66 View Post
John,
the link is for a 588nm filter not Ha.....
All the filters I've found so far are 25mm sometimes mounted in a 28mm threaded frame.
No worries Ken - I have sent them an email and perhaps they can provide a quote for me? Certainly a market for 3-4nm low end narrow band filters!
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