Meade - LX90

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Contents

Instruction Manual 8 LX90 Schmidt Cassegrain Telescope AutoStar LNT SmartFinder The Meade Schmidt Cassegrain Optical System In the Schmidt Cassegrain design of the Meade LX90 light enters from the right passes through a thin lens with 2 sided aspheric correction correcting plate proceeds to a spherical primary mirror and then to a convex secondary mirror The convex secondary mirror multiplies the effective focal length of the primary mirror and results in a focus at the focal plane with light passing through a central perforation in the primary mirror The Meade 8 LX90 Schmidt Cassegrain includes an oversize primary mirror of an 8 25 diameter yielding a fully illumi nated field of view significantly wider than is possible with a st ...