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Types of Telescopes: Maksutov-Cassegrain (Maksutovs, MAKs) Types of Telescopes: Maksutov-Cassegrain
The Maksutov design is a catadioptric (using both mirrors and lens) design with advantages and disadvantages similar to those of its close relative, the Schmidt-Cassegrain telescope (SCT). It uses a thick meniscus correcting lens with a strong curvature and a secondary mirror that is usually an aluminized spot on the corrector. The Maksutov optical design typically is easier to make but requires more material for the corrector lens than the SCT.

Maksutov optical plan
Maksutov optical plan.

The Maksutov secondary mirror is usually smaller than the SCT secondary, giving it slightly better resolution for planetary observing. A Maksutov is heavier than a  SCT of the same aperture and because of the thick correcting lens it takes a long time to reach thermal stability at night.

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