Ritchey–Chrétien telescope

Rarity: Uncommon

A topic a little better known than average, read and translated beyond its own country.

Rarity follows how well known the article is: its views on the French and English Wikipedia over a year, and the number of languages it exists in.

At a glance

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Notion

Domain

Science and technology

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What Wikipedia says

A Ritchey–Chrétien telescope (RCT or simply RC) is a specialized variant of the Cassegrain telescope that has a hyperbolic primary mirror and a hyperbolic secondary mirror designed to eliminate off-axis optical errors (coma).

Excerpt from the Wikipedia article “Ritchey–Chrétien telescope”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: Kowloonese at English Wikipedia, Public domain, via Wikimedia Commons.