Optolong H-alpha 7nm 2" Filter

Thanks to Optolong H-alpha filters, it is possible to take photographs even from heavily light-polluted skies; the passband centered on the H-alpha line at 12nm and 7nm eliminates all light pollution (including natural light caused by the Full Moon) and allows for very long exposures on emission or reflection nebulae. The 12nm version is more suitable for small telescopes or color sensors. With the 7nm filter and B/W CCD sensors, you can capture the faintest details of nebulae even under polluted skies; obviously, under a good sky, the result will be even more spectacular!

Main features

Optolong quality for a reliable and satisfying observation experience.

• Filter diameter: 2"

Main technical specifications