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occulting disk |
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occulting disk [ə′kəlt·iŋ ‚disk] (astronomy) A small metal disk placed in the focal plane of the eyepiece of a telescope, usually to cover a bright object in order to permit observation of a faint one. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| The similarity is because astronomers used an occulting disk on the telescope to block the glare of the central star. To study the corona, a spectrometer aboard SOHO recreates a solar eclipse by using an occulting disk, or Both appeared in the coronagraphic images as they approached the sun, which was masked by the instrument's occulting disk, but neither emerged on the disk's other side in subsequent frames. |
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