coronograph
(noun)
noun
1. (astronomy) A telescope, fitted with an attachment that blocks out direct rays from the sun, used to study and photograph the corona of the sun
2. (astronomy) The attachment used in such a telescope
(noun)
1. (astronomy) A telescope, fitted with an attachment that blocks out direct rays from the sun, used to study and photograph the corona of the sun
2. (astronomy) The attachment used in such a telescope