for sale in like new condition:
DayStar H-alpha Solarfilter Modell University 0.5 A with 160 mm highest quality polished Baader Planetarium 160 mm ERF, large highest quality Zeiss Jena IR Filter and Astrophysics Telecentric system. All matched for a AP 155 EDF, but can easy used on any other scope.
The 0.5 angstrom bandwidth filter provides the highest contract and detail. disk features are the highest contrast These filters can provide professional observatory quality when coupled with telescopes having one arc-second resolution. The UNIVERSITY Series is the most popular filter in the 0.5 angstrom. Filter. The bandwidths indicated are maximum not average.
New cost nearly $ 9,000
asking US $ 6,900 only
Please notice the ERF and IR filter have been custommade to offer a quality to not degrate the image quality as this large size, similar cheap filters of same size cannot offer the same high resolution.