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This product range is particularly interesting for DIY enthusiasts. The lence cells are usually provided with temperature compensation and can be fit into different tubes, made of Krupax, metal or carbon. The optics are individually tested and equipped with an interferogram (or on special request).
The combination of materials results in an unusually high image quality for this price and makes the lens a real all-rounder for visual and astrophotographic applications.
Focal ratio 1:7
Aperture 180mm
Focal length 1260mm
FCD100 Triplet Optics
Temperature compensated cell allows collimation of the lens via three side screws.
Good as a basis for the do-it-yourself construction of a high-quality refractor