Custom Scientific standard grade 3.5 nm wide, 1.25" dia. H-alpha filter in holder. New $225. Asking $175 and I pay shipping in the U.S. This filter is generally used for CCD imaging and is NOT appropriate for a solar filter.
Custom Scientifc Red Continuum filter 1.25" in holder at 645 nm for subtracting stars and background from H-alpha filter. New $200. Asking $150.