bn:14239835n
Noun Concept
Categories: Optical components
EN
star diagonal  Diagonal mirror  Erecting lens  Prism diagonal
EN
A star diagonal, erecting lens or diagonal mirror is an angled mirror or prism used in telescopes that allows viewing from a direction that is perpendicular to the usual eyepiece axis. Wikipedia
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EN
A star diagonal, erecting lens or diagonal mirror is an angled mirror or prism used in telescopes that allows viewing from a direction that is perpendicular to the usual eyepiece axis. Wikipedia
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