Optolong UHC Light Pollution Filter Nikon FF Full Frame Camera 94240 Includes CD-ROM "The Sky" Astronomy

Includes CD-ROM "The Sky" Astronomy Software which provides education about the sky and printable sky maps

Optical Tube Weight: 4

Eye Relief: 11mm

Angular Field of View: 4

Optolong UHC Light Pollution Filter Nikon FF Full Frame Camera 94240 Includes CD-ROM "The Sky" AstronomyOptolong UHC Light Pollution Filter Nikon 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 our