Thread: Alternative Narrow Band Filter Suppliers - H-Alpha
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Old 22-11-2015, 09:24 AM
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Merlin66 (Ken)
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Merlin66 is offline 		 
Join Date: Oct 2005
Location: Junortoun Vic
Posts: 8,908
John,
The filters from Omega Bob are very good. But they are all 25mm diameter.
He has supplied replacement ITF filters for the PST and more recently some interesting CaK narrowband filters.
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