Optolong UHC Light Pollution Filter Canon EOS FF Full Frame Camera altazimuth Autoguide port: Yes
Optolong UHC Light Pollution Filter Canon EOS FF Full Frame Camera altazimuth Autoguide port: YesOptolong UHC Light Pollution Filter Canon EOS FF Full Frame Camera The UHC (Ultra High Contrast) broadband filter is designed to improve the visibility of various deepsky objects. By selectively reducing the transmission of wavelengths of light pollutants, specifically those produced by artificial lightings including mercury vapor lamps, both high & low pressure sodium vapor lights and the unwanted natural light caused by neutral oxygen emission in
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