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William Parsons 36-inch Reflector

William Parsons 36-inch Reflector Visual Arts Astronomy Social Studies Aviation & Space Exploration STEM

This nineteenth-century illustration depicts William Parsons’ 3-foot telescope which the astronomer, also known as Lord Rosse, had constructed in 1839. The telescope was situated on the Birr Castle property in Parsonstown, Ireland.

Among other things, this telescope was used to measure the temperature of Earth’s Moon in 1868. In this drawing, we see the telescope with its alt-azimuth mount. In 1876, the telescope was redesigned, and remounted, as an equatorial telescope.

The illustration is from The Cycle of Celestial Objects Continued at the Hartwell Observatory to 1859, by William Henry SMYTH (Rear Admiral), published in London during 1860.


Media Credits

Illustration online via University of Virginia, Department of Astronomy.

 

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