ED152 Air-Spaced Triplet Apochromatic Telescope in Carbon Fiber。Explore Scientific FPL-53 Triplet Carbon APO Refractors — ProAstroz。PlaneWave Europe | Telescope Systems。Amazon.com : SVBONY SV503 Refractor Telescope, 80mm F7 Extra Low。All are dried specimens collected in the field for academic research.Data is included with each specimen.Rubbing