True or false The reflecting telescope are of mainly two types Newtonian and Cass grain.
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The Cassegrain design and its variations
Ritchey–Chrétien. Main article: Ritchey–Chrétien telescope. ...
Three-mirror anastigmat. Main article: Three-mirror anastigmat. ...
Dall–Kirkham. See also: Modified Dall–Kirkham telescope. ...
Nasmyth. Main article: Nasmyth telescope.
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