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searching for Gregorian telescope 2 found (56 total)

Solar physics (1,418 words) [view diff] exact match in snippet view article find links to article

Solar Telescope(NTS) which is a 1.6 meter, clear-aperture, off-axis Gregorian telescope. The NTS saw first light in December 2008. Until the ATST comes on

Aberdeen (14,141 words) [view diff] exact match in snippet view article find links to article

gratings a year after Newton's prism experiments, and invented the Gregorian telescope design in 1663 which is used in telescopes such as the Arecibo Observatory