Cassegrain telescope

noun
Cas·se·grain telescope | \ ˈka-sə-ˌgrān- \
variants: or less commonly Cassegrain or Cassegrainian telescope \ˌka-sə-ˈgrā-nē-ən- \

Definition of Cassegrain telescope 

: a reflecting telescope that has a paraboloidal primary mirror and hyperboloidal secondary mirror, is equivalent in its optical effects to a telephoto lens, and usually has the light brought to a focus through a perforation in the center of the primary mirror

First Known Use of Cassegrain telescope

1806, in the meaning defined above

History and Etymology for Cassegrain telescope

after Laurent Cassegrain †1693 French priest and teacher credited with its invention

Keep scrolling for more

Learn More about Cassegrain telescope

Share Cassegrain telescope

Dictionary Entries near Cassegrain telescope

Cassatt

cassava

casse

Cassegrain telescope

Casselberry

cassel brown

cassel green

Statistics for Cassegrain telescope

Look-up Popularity

Time Traveler for Cassegrain telescope

The first known use of Cassegrain telescope was in 1806

See more words from the same year

Comments on Cassegrain telescope

What made you want to look up Cassegrain telescope? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

by word of mouth

Get Word of the Day daily email!

Test Your Vocabulary

Name that Food Quiz

True or False

Test your knowledge - and maybe learn something along the way.

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!