coude telescope: meaning, definition, pronunciation and examples
C2Technical/Scientific
Quick answer
What does “coude telescope” mean?
A specific type of telescope with a fixed vertical eyepiece and a bend (coude) in its light path, allowing for heavy, non-moving auxiliary equipment to be attached.
Audio
Pronunciation
Definition
Meaning and Definition
A specific type of telescope with a fixed vertical eyepiece and a bend (coude) in its light path, allowing for heavy, non-moving auxiliary equipment to be attached.
A reflecting telescope design where light is directed along the polar axis to a fixed focus, typically in a separate, temperature-controlled room, enabling the use of large, delicate spectrographs or other instruments that cannot be mounted on the moving telescope tube.
Dialectal Variation
British vs American Usage
Differences
No significant lexical differences. Spelling remains consistent. The French word 'coude' may retain its acute accent (coudé) in some British technical publications, while American usage tends to drop it.
Connotations
Identical connotations of precision, advanced astronomical research, and large-scale professional observatories in both dialects.
Frequency
Extremely low frequency in general language. Used only within the specialised fields of astronomy, astrophysics, and optical instrumentation. No discernible difference in frequency between UK and US professional contexts.
Grammar
How to Use “coude telescope” in a Sentence
The [instrument] was mounted at the coude focus of the telescope.They conducted the spectroscopy using a [model name] coude telescope.Vocabulary
Collocations
Examples
Examples of “coude telescope” in a Sentence
adjective
British English
- The coude-focus instrumentation required a separate room.
- They discussed the coude-telescope design.
American English
- The coude focus instrumentation required a separate room.
- They discussed the coude telescope design.
Usage
Meaning in Context
Business
Virtually never used.
Academic
Used in advanced astrophysics, optical engineering, and astronomy research papers and textbooks.
Everyday
Never used.
Technical
The primary context. Used to specify a telescope's optical configuration, particularly in observatory design, instrument proposals, and technical descriptions of observational setups.
Vocabulary
Synonyms of “coude telescope”
Neutral
Weak
Vocabulary
Antonyms of “coude telescope”
Watch out
Common Mistakes When Using “coude telescope”
- Misspelling as 'coudé', 'coode', or 'couda'.
- Using it as a general term for any large telescope.
- Incorrect stress: stressing the first syllable of 'coude' (it's /kuːˈdeɪ/).
FAQ
Frequently Asked Questions
Not necessarily the overall shape, but its internal optical path is distinct. It uses a series of mirrors to bend ('coude') the light path along the telescope's polar axis to a fixed point, often outside the moving structure.
Rarely for visual observation. Its design is optimized for instrumentation. The eyepiece (or more typically, the instrument port) is in a fixed location, separate from the moving telescope tube.
Indirectly, yes. Both 'coude' (French) and 'elbow' derive from Proto-Germanic and Indo-European roots related to bending. In this context, it directly describes the bent light path.
They are a specialized design found in major professional research observatories, particularly in older, large telescopes built for spectroscopy. Many modern very large telescopes use other foci (like Nasmyth or Cassegrain) for similar reasons of instrument stability.
A specific type of telescope with a fixed vertical eyepiece and a bend (coude) in its light path, allowing for heavy, non-moving auxiliary equipment to be attached.
Coude telescope is usually technical/scientific in register.
Coude telescope: in British English it is pronounced /ˌkuːdeɪ ˈtɛlɪskəʊp/, and in American English it is pronounced /ˌkuˈdeɪ ˈtɛləˌskoʊp/. Tap the audio buttons above to hear it.
Learning
Memory Aids
Mnemonic
Think of 'coude' like 'elbow' (from French). The telescope's light path has an 'elbow' bend that sends the light to a fixed, comfortable position, much like bringing a drink to your mouth via your bent elbow.
Conceptual Metaphor
A FIXED LABORATORY BRANCH: The telescope is conceptualized as a tree or pipe system where one stable, immobile branch (the coude path) delivers light to a controlled laboratory environment, separating the delicate analysis from the moving structure.
Practice
Quiz
What is the primary functional advantage of a coude telescope?