coronagraph

coronagraph读音音标

英 [kə\'rəʊnəgrɑ:f]

美 [kə\'roʊnəgrɑf]

coronagraph意思解释

n.

日冕观测仪；

英英释义

A coronagraph is a telescopic attachment designed to block out the direct light from a star so that nearby objects – which otherwise would be hidden in the star\'s bright glare – can be resolved. Most coronagraphs are intended to view the corona of the Sun, but a new class of conceptually similar instruments (called stellar coronagraphs to distinguish them from solar coronagraphs) are being used to find extrasolar planets around nearby stars.