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Custom Scientific Narrowband Filters

pmlogg

By pmlogg
in Imaging - Deep Sky

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pmlogg

pmlogg

Posted
Posted

SBig used to supply Custom Scientific (CS) filters as standard and the filters are still being made in America.  The are expensive too.

I know that they are not in common usage these days but does anyone have experience with the 4.5nm versions, especially the SII?

 

 

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