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Cassegrain mirror system

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Cassegrain Telescope Walkthrough Video

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Cassegrain system AQA A Level Physics

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Cassegrain telescope IB

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What is CASSEGRAIN REFLECTOR? What does CASSEGRAIN REFLECTOR mean? CASSEGRAIN REFLECTOR meaning

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Constructing a Cassegrain Telescope

The Cassegrain reflector is a combination of a primary concave mirror and a secondary convex mirror, often used in optical telescopes and radio antennas. This design puts the focal point at a convenient location behind the primary mirror and the convex secondary adds a telephoto effect creating a much longer focal length in a mechanically short system.