William Optics ZenithStar 61mm MARK II f/5.9 Imaging APO Refractor FPL-53 ED APO
For sale William Optics ZenithStar 61mm MARK II f/5.9 Imaging APO Refractor FPL-53 ED APO with William Optics Flat61a Flattener. Brought new from the local WO dealer Proastroz a month ago , unused LNIB , was going to use it for a solar project but changed plans .