Occulting disk
An occulting disk is a small disk placed centrally in the eyepiece of a telescope or at its focal point, to block the view of a bright object so that fainter objects can be seen more easily.[1][2]
In 1842, Rev. Prof. Chevallier actually described an occulting disk when he reported the design and use of a disk placed in the eyepiece of his telescope in the manner of a micrometer to create artificial solar eclipses.[3]
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
[edit]References
[edit]- ↑ "Occulting disk - Oxford Reference". Oxford Reference. Oxford University Press. Retrieved 28 August 2023.
- ↑ Ridpath, Ian (2012). A Dictionary of Astronomy. Oxford University Press. p. 336. ISBN 9780199609055. Retrieved 28 August 2023.
- ↑ Chevallier, Temple (13 May 1842). "II. A Letter from Professor Chevallier, on some Phenomena observable in Total and Annular Solar Eclipses". Monthly Notices of the Royal Astronomical Society. 5 (23): 186–187. doi:10.1093/mnras/5.23.186.
.png){kind=small} | This telescope-related article is a stub. You can help Wikipedia by adding missing information. |
 | This article about stellar astronomy is a stub. You can help Wikipedia by adding missing information. |