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the optical axis of symmetry in tube constructed GSO Dobsonian is most reliable among all products
The special camera adapter and 2” eyepiece adapter are included
Built in GSO Coma Corrector is optimized by 3 elements fully coated lens
and its inner a brass compression ring is designed to clamps equipment tightly but avoid any scratch on it
A 35mm-length 2" extension adapter is also included
GSO RC 0.75x Reducer the optical axis of symmetry1. GSO 0. 75x focal reducer is designed only for Ritchey Chretien telescopes 2. Reducer is 2 4 elements fully coated lens, provide a wider field of view and larger aperture for astrophotography 3. The special camera adapter and 2 eyepiece adapter are included. 4. The GSO 0. 75x focal reducer provides about 80mm back focus. Please follow the instruction to derive best performance. 5. Free shipping in US mainland
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