TERMIUM Plus®
From: Translation Bureau
On social media
Consult the Government of Canada’s terminology data bank.
FOYER CASSEGRAIN [4 records]
Record 1 - internal organization data 1987-03-12
Record 1, English
Record 1, Subject field(s)
- Facilities and Instruments (Astronomy)
Record 1, Main entry term, English
- secondary mirror
1, record 1, English, secondary%20mirror
correct
Record 1, Abbreviations, English
Record 1, Synonyms, English
Record 1, Textual support, English
Record number: 1, Textual support number: 1 DEF
The mirror, curved or plane, that reflects light into the eyepiece or on to other optical surfaces after it reflects from the primary mirror. 1, record 1, English, - secondary%20mirror
Record 1, French
Record 1, Domaine(s)
- Installations et instruments (Astronomie)
Record 1, Main entry term, French
- miroir secondaire
1, record 1, French, miroir%20secondaire
correct, masculine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
Record 1, Textual support, French
Record number: 1, Textual support number: 1 CONT
Cette combinaison [le télescope Cassegrain], fait appel à un miroir secondaire hyperbolique qui, placé sur l'axe un peu avant le foyer, renvoie le faisceau à travers une ouverture ménagée dans le miroir principal. 1, record 1, French, - miroir%20secondaire
Record 1, Spanish
Record 1, Textual support, Spanish
Record 2 - internal organization data 1976-06-19
Record 2, English
Record 2, Subject field(s)
- Optics
Record 2, Main entry term, English
- low aperture Cassegrain focus 1, record 2, English, low%20aperture%20Cassegrain%20focus
Record 2, Abbreviations, English
Record 2, Synonyms, English
Record 2, French
Record 2, Domaine(s)
- Optique
Record 2, Main entry term, French
- foyer cassegrain à faible ouverture
1, record 2, French, foyer%20cassegrain%20%C3%A0%20faible%20ouverture
masculine noun
Record 2, Abbreviations, French
Record 2, Synonyms, French
Record 2, Textual support, French
Record 2, Spanish
Record 2, Textual support, Spanish
Record 3 - internal organization data 1976-06-19
Record 3, English
Record 3, Subject field(s)
- Optics
Record 3, Main entry term, English
- Cassegrain focus 1, record 3, English, Cassegrain%20focus
Record 3, Abbreviations, English
Record 3, Synonyms, English
Record 3, French
Record 3, Domaine(s)
- Optique
Record 3, Main entry term, French
- foyer cassegrain
1, record 3, French, foyer%20cassegrain
masculine noun
Record 3, Abbreviations, French
Record 3, Synonyms, French
Record 3, Textual support, French
Record 3, Spanish
Record 3, Textual support, Spanish
Record 4 - internal organization data 1976-06-19
Record 4, English
Record 4, Subject field(s)
- Optics
Record 4, Main entry term, English
- large field Cassegrain focus 1, record 4, English, large%20field%20Cassegrain%20focus
Record 4, Abbreviations, English
Record 4, Synonyms, English
Record 4, French
Record 4, Domaine(s)
- Optique
Record 4, Main entry term, French
- foyer cassegrain à grand champ
1, record 4, French, foyer%20cassegrain%20%C3%A0%20grand%20champ
masculine noun
Record 4, Abbreviations, French
Record 4, Synonyms, French
Record 4, Textual support, French
Record 4, Spanish
Record 4, Textual support, Spanish
Copyright notice for the TERMIUM Plus® data bank
© Public Services and Procurement Canada, 2026
TERMIUM Plus®, the Government of Canada's terminology and linguistic data bank
A product of the Translation Bureau
Features
GCtranslate (available on the Government of Canada network only)
Use this artificial intelligence prototype to translate Government of Canada content up to and including Protected B. Available to employees of selected departments and agencies only.
Writing tools
The Language Portal’s writing tools have a new look! Easy to consult, they give you access to a wealth of information that will help you write better in English and French.
Glossaries and vocabularies
Access Translation Bureau glossaries and vocabularies.
- Date Modified: