Herschelian telescope

noun

Definition of Herschelian telescope 

: a reflecting telescope in which the need for a secondary mirror is avoided by tilting the primary mirror slightly and thereby throwing the focused image to the side where it can be observed without obstruction to the incoming light rays

called also off-axis reflector

Love words?

You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Start your free trial today and get unlimited access to America's largest dictionary, with:

  • More than 250,000 words that aren't in our free dictionary
  • Expanded definitions, etymologies, and usage notes
  • Advanced search features
  • Ad free!

Learn More about Herschelian telescope

Share Herschelian telescope

Dictionary Entries near Herschelian telescope

Herschel

Herschel effect

Herschelian

Herschelian telescope

herschelite

herse

herself

Statistics for Herschelian telescope

Look-up Popularity

Comments on Herschelian telescope

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

WORD OF THE DAY

not any or not one

Get Word of the Day daily email!

Test Your Vocabulary

Great Scrabble Words—A Quiz

  • scrabble-tiles-that-read-scrabble-quiz
  • Which of the following Q-without-U words means the number five in cards or dice?
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

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!