Baader makes a range of Barlow lenses including the affordable 1.25" Q-Barlow, Hyperion Barlow for the Hyperion Zoom eyepiece, multi-functional VIP Modular Apochromatic Barlow, Carl Zeiss Abbe-Barlow which is made by Zeiss in Jena, and the CaF2 Fluorite Flatfield Converter can be combined with every optical system for photography and visual observations as best and most sophisticated Barlow lens in the world.
