Alcor System Introduces 4” Field Corrector for Fast Newtonians

Alcor System announced the release of a new 4” field corrector for Newtonian reflectors and other telescopes with parabolic mirrors. Through the use of special glasses and careful optical design, this large corrector offers near diffraction-limited performance for telescopes with mirrors of 300 mm to 700 mm diameter and focal ratios and fast as f/2.8. It delivers a highly corrected field across a 36×36 mm image circle, large enough for use with full-frame astronomy cameras.





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