Filter H-Alpha 5nm 2"

H-alpha filter passes light at 656nm wavelength. Best choice of narrowband H-alpha astrophotography filter for high-contrast imaging and revealing rich details of the nebula even in areas with strong light pollution,

2" H-alpha narrowband filter (wavelength 656nm)

Incredible contrast for all emission nebulae when using CCD or webcams. Take superb deep sky images directly from the middle of town.