Base Hubble : notion 32

Code Eurodicautom : AUG

Code Lenoch : HUB95

FRANÇAIS

Terme : assemblage coronographique

Définition

Dispositif fait de masques et de doigts permettant d'occulter des objets très lumineux pour observer et photographier des objets voisins faiblement lumineux. (STOF-R)

Code grammaire : NM

Auteur : Isabelle Stoffel

Liens conceptuels

assemblage coronographique "se compose de" cache apodiseur
assemblage coronographique "se compose de" doigt coronographique
assemblage coronographique "est une partie de" optique de transfert

ANGLAIS

Terme : coronographic facility

Définition

An optical mechanism occulting the image of bright celestial objects, by means of masks or fingers, allowing thus the faint light of the corona to be isolated. (MITT-C : 91, ILLI-C : 78 (A))

Code grammaire : N

Contexte

Faint structures close to bright objects may be studied with a coronographic facility included in the F/96 relay. It consists of a fixed mask placed at the ST focal plane and of an apodizing mask located on the F/288 removable Cassegrain at the ST pupil. (ESAa-G : 16)

Note

The coronograph was designed in 1930 by the French astronomer Bernard Lyot for observing and photographing the Sun's corona, prominences, etc., at times other than at solar eclipses. (ILLI-C : 78)

Auteur : Isabelle Stoffel

Liens conceptuels

coronographic facility "is made up of a(n)" apodizing mask
coronographic facility "is made up of a(n)" coronographic finger
coronographic facility "is a part of a(n)" transfer optics