H-BETA NARROWBAND FILTER 1.25" NARROWBAND FILTER, for example. FOR HORSE HEAD, COCOON FOG AND CALIFORNIA FOG
This high-performance CCD filter passes only the H-Beta line and is therefore perfect for the contrast of objects that significantly increase in this wavelength range steel. For example, Horsehead Nebula, Cocoon Nebula, California Fog. It is recommended for photography of H-Beta emitting objects in CCD photography in the dark sky.