Astrodon 1.25" 5mn H-Alpha Filter
Astrodon 1.25" 5mn H-Alpha Filter
This 1.25" H-Alpha filter has a 5nm bandpass at a 656.3nm peak emission line. It offers up to a 90% transmission rate at the center of the filter, which reveals rich details of the nebula even in areas with strong light pollution.
Please note: This filter is in a factory sealed case, however, the exterior surface of the case is significantly scratched. This cosmetic damaged is isolated to the filter case, and the filter itself is in brand new condition.
