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Acadia Astronomical Society “Leviathan of Parsonstown” Talk

April 10 @ 6:30 pm - 8:00 pm

Any reviewer of the history of astronomy will read about a large telescope called the “Leviathan of Parsonstown”. Built in Ireland in 1845 by the 3rd Earl of Rosse, it was the largest telescope in the world for 70 years. Each of two 72″ speculum mirrors were alternately mounted in a 54′ long tube, suspended between two purpose-built castle walls. Amateur astronomer Dwight Lanpher will speak about his visit last September to Birr Castle, County Offaly, Ireland to examine “the Great Telescope.” His presentation will show technical details of how the telescope was operated and the modifications that were made during a $1,200,000 renovation in 1995. Images will also include the last remaining of the two, 3-ton, speculum mirrors, which Dwight examined at its current location at the Museum of Science in London.

When not visiting ancient telescopes, Mr. Lanpher travels throughout New England and eastern Canada attending astronomy meetings as liaison for clubs in Maine, New Hampshire and a few in Massachusetts and observing at their star parties when the opportunity avails. Professionally, Mr. Lanpher works as an Electrical Engineer.


April 10
6:30 pm - 8:00 pm
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Jesup Memorial Library
34 Mt. Desert Street
Bar Harbor, ME 04609 United States
+ Google Map
(207) 288-4245


Jesup Memorial Library
(207) 288-4245