Features High quality Explore Scientific H-Alpha filter Lets only the emission lines of hydrogen “through” Absorbs almost all of the artificial light More contrast and details for all urban astrophotographers Passband bandwidth: 12 nm H-alpha filters can only be used for astrophotography Ideal for use near cities with a slightly brightened sky Also blocks almost […]

Features High quality Explore Scientific H-Alpha filter Lets only the emission lines of hydrogen “through” Absorbs almost all of the artificial light More contrast and details for all urban astrophotographers Passband bandwidth: 7 nm H-alpha filters can only be used for astrophotography Narrow-band design for difficult city conditions and with heavily brightened skies Also blocks […]

Features High quality Explore Scientific H-Alpha filter Lets only the emission lines of hydrogen “through” Absorbs almost all of the artificial light More contrast and details for all urban astrophotographers Passband bandwidth: 12 nm H-alpha filters can only be used for astrophotography Ideal for use near cities with a slightly brightened sky Also blocks almost […]

Features High quality Explore Scientific H-Alpha filter Lets only the emission lines of hydrogen “through” Absorbs almost all of the artificial light More contrast and details for all urban astrophotographers Passband bandwidth: 7 nm H-alpha filters can only be used for astrophotography Narrow-band design for difficult city conditions and with heavily brightened skies Also blocks […]