(Q1062138)

English

Ritchey–Chrétien telescope

specialized Cassegrain telescope

  • RCT
  • RC
  • Ritchie-Chrétien telescope
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Statements

1910s
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RitcheyTelescope.jpg
623 × 480; 161 KB
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NOFS 40inch03.jpg
480 × 640; 78 KB
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Ritchey-Chrétien telescopes

Identifiers