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OPTOLONG UHC FOR CANON 5D - 6D (FULL FRAME)
Clip mounted filter for Canon EOS cameras 5D and 6D with full-size sensor.
The Optolong UHC (Ultra High Contrast) broadband filter is designed to improve the visibility of various deep sky objects. Selectively reducing the transmission of wavelengths of light pollutants, specifically those produced by artificial lighting (including mercury vapor lamps, both high & low pressure sodium vapor lights, and the unwanted natural light caused by neutral oxygen emission in our atmosphere (i.e. skyglow)). Being highly transparent to the main nebula emission lines at OIII (496nm and 500nm), H-beta (486nm), NII (654nm and 658nm), H-alpha(656nm) as well as SII (672nm).
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