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Related to Cassegrain telescope: Newtonian telescope
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I think somebody just ran the same e-mail through," says Lillig, who makes guitars for a living when he's not peering into the heavens with his 16-inch Cassegrain telescope that costs in the vicinity of $70,000.
To perform these measurements, Scripps-EPIC uses a 4 million element charge coupled detector array attached to a 30 cm Cassegrain telescope with 10 wavelength channels in the ultraviolet, visible, and near-infrared spectral regions.
The Ritchey-Chr[c]tien telescope or RCT is a specialized Cassegrain telescope with a hyperbolic primary and a hyperbolic secondary mirror.