Lumicon's Night Sky Hydrogen-Alpha Filters are long-pass filters with a 50% transition from blocking to passing at about 640nm. At wavelengths longer than 650nm, transmittance is 90% or above ... Learn More
Lumicon International offers the best and most extensive line of astronomical filters and astronomical accessories in the world. Astronomy Filters for every imagined visual and astrophotographic application are available in many configurations and sizes. Telescope Filters for light polluted skies, planets, deep sky objects, galaxies, nebulae, planetary nebulae, comets, and solar prominences. All Nebula and light Pollution filter are individually tested and proudly inscribed with the percentage of light transmittance of their primary emission lines.
Lumicon also offers a complete line of unique optical accessories, including the World Famous Easy Guider Series, Sky Vector Systems, Diagonals, Finderscopes, and Binocular Viewers.
To ensure that Lumicon astronomy accessories and astronomy filters remain the World’s Best, the strictest quality control standards are employed throughout the production process. All Lumicon astronomical products are made to the highest standards available and come with a 100% Satisfaction Guarantee!
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