Baader Filters CCD H-alpha 2″ 7nm, OIII and SII narrow band filter set

Baader narrowband CCD filters set for full-frame CCD cameras, consisting of 3 filters: Halpha (HWB 7nm), OIII, and SII. The filters are, of course, plane-optical polished. 1.25″ and 2″ filters can be mounted in Baader Low Profile Filter Cells.