Filters for "H-alpha" Monochrome Imaging



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Kenko R1(R60) and R64 filters are widely used in Japan as "H-alpha" filters for monochrome CCD and emulsion imaging (usually with Kodak Tech Pan). The red passband emphasizes H-alpha emission nebulae, reduces sky-glow, and sharpens the performance of lenses which may not bring all colors to perfect focus at the same point.  

Kenko R1(R60) and R64 filters come in the following sizes: 48mm, 52mm, 72mm, 77mm and 82mm. Filter thickness is 2.5mm.

WARNING: These filters are not suitable for solar viewing or photography.