Occulting disk
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![](https://upload.wikimedia.org/wikipedia/commons/thumb/1/1a/Debris_disk_AU_Mic_HST.jpg/300px-Debris_disk_AU_Mic_HST.jpg)
A debris disk around the star AU Microscopii. The black circle in the center is an occulting disk of a coronagraph.
An occulting disk is a small disk used in a telescope to block the view of a bright object in order to allow observation of a fainter one. The coronagraph, at its simplest, is an occulting disk in the focal plane of a telescope, or in front of the entrance aperture, that blocks out the image of the solar disk, so that the corona can be seen. Starshade is one designed to fly in formation with a space telescope to image exoplanets.
See also
- New Worlds Mission
- Space sunshade
- Telescope for Habitable Exoplanets and Interstellar/Intergalactic Astronomy
References