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ASA 3" Wynne Corrector 0.95x
The ASA 3" Wynne corrector is a high performance corrector for Newtonian telescopes with a 0.95x multiplier meaning an F4 Newtonian will operate at F3.8 with a corresponding 0.95x reduction in focal length.
ASA 2" Reducer Corrector 0.73 x for Newtonian