Chroma H-Alpha 3nm Filters

The Chroma H-alpha 3nm Narrowband Filters are essential for imaging objects, like nebulae, that are rich in ionized hydrogen atoms. These filters work extremely well in heavy light polluted areas.

Chroma manufactures the highest quality astronomy filters with durable, sputtered hard coating using single substrates of the best glass, eliminating the need for laminations. All primary filter coatings are applied on the front surface and anti-reflection coatings on the rear surface to prevent ghosting and to maximize transmission.