Aperture: 12-Inch. Focal Length: 3048mm. Focal Ratio: f/10. UHTC Coatings, 1.25-Inch Diagonal Prism. LX90-ACF For the truly discerning astronomer who will not tolerate anything but the very best, there is Meade's Advanced Coma-Free (ACF) optical system. ACF takes all of the features of our SC
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