Astromania 2'' Narrowband Nbpf Hydrogen A 12Nm Filter Enhances The Contrast Between Object And Sky Allows You To Take Images

Astromania 2'' Narrowband Nbpf Hydrogen-A 12Nm Filter. Astrophotography Under A Light-Polluted Night Sky Can Be Difficult. The Solution Is An H-Alpha Filter. The Astromania H-Alpha Cut-Off Filter Works To Filter Out A Large Part Of This Light Pollution. This Convenient Filter Only Allows 12Nm Bandwidth Of Light Centered On A Wavelength Of 660Nm To Pass Through, Which Means It Blocks A Large Part Of The Scattered Light And Also Blocks The Light From Artificial Mercury And Sodium-Vapour Lamps. Young Stars Embedded In The Bright Red Of A Nebula - An H-Alpha Filter Is The Expert If You Want To Capture Hydrogen Nebulae In All Their Glory. The Astromania H-Aplha Cut-Off Filter Enhances The Contrast Between Object And Sky, Allowing You To Take Good Quality Images Even Under Urban Skies. Metal Filter Cell Threads Directly Into The 2-Inch Barrel Of Your Telescope Eyepiece. Mounted In A Nicely Anodized Housing.