Astro-Tech
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Astro-Tech 20" f/8 truss tube Ritchey-Chrétien optical tube
$12,995.00The Astro-Tech 20" f/8 AT20RCT carbon fiber Serrurier truss Ritchey-Chrétien makes high quality large-aperture/large format DSLR and CCD imaging affordable for the dedicated amateur astrophotographer and educational institution.