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Ptarmigan
Carpal Tunnel
Reged: 09/23/04
Posts: 2356
Loc: Arctic
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Has anyone ever used a Cokin Filter for astrophotography, like a cheap alternative to a light pollution filter?
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Ptarmigans=Cute and Cuddly
Meade Starfinder 8
Nikon 10x50
Rebel XT
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thyrymn
member
Reged: 07/26/09
Posts: 44
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That's an interesting thought. I haven't done it though.
Those have a square holder and will mount to a treaded lens at the top; then you slide the filter in and out as needed.
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Ptarmigan
Carpal Tunnel
Reged: 09/23/04
Posts: 2356
Loc: Arctic
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There are red filters that Cokin have and can be used for black and white. I have read that a deep red filter can be used as cheap H-alpha filter.
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Ptarmigans=Cute and Cuddly
Meade Starfinder 8
Nikon 10x50
Rebel XT
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