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.