![Lord Rosse's 72 in/1.8m reflecting telescope, 1849. William Parsons, 3rd Earl of Rosse (1800-1867), Stock Photo, Picture And Rights Managed Image. Pic. HEZ-1158367 | agefotostock Lord Rosse's 72 in/1.8m reflecting telescope, 1849. William Parsons, 3rd Earl of Rosse (1800-1867), Stock Photo, Picture And Rights Managed Image. Pic. HEZ-1158367 | agefotostock](https://previews.agefotostock.com/previewimage/medibigoff/995330fffdb886af66d4210cf1bf8a1a/hez-1158367.jpg)
Lord Rosse's 72 in/1.8m reflecting telescope, 1849. William Parsons, 3rd Earl of Rosse (1800-1867), Stock Photo, Picture And Rights Managed Image. Pic. HEZ-1158367 | agefotostock
![72-inch reflecting telescope at Birr Castle, Parsonstown, Ireland. "Leviathan," completed in 1845, was the world's largest telescope until the early 20th century. William Parsons, 3rd Earl of Rosse (June 17, 1800 - 72-inch reflecting telescope at Birr Castle, Parsonstown, Ireland. "Leviathan," completed in 1845, was the world's largest telescope until the early 20th century. William Parsons, 3rd Earl of Rosse (June 17, 1800 -](https://c8.alamy.com/zooms/6/3f5af91774ff4f96ab26efbd87feb84d/2be1062.jpg)
72-inch reflecting telescope at Birr Castle, Parsonstown, Ireland. "Leviathan," completed in 1845, was the world's largest telescope until the early 20th century. William Parsons, 3rd Earl of Rosse (June 17, 1800 -
![The Leviathan of Parsonstown, the 72 inch telescope built by William Parsons, 3rd Earl of Rosse, Stock Photo, Picture And Rights Managed Image. Pic. XY2-3847329 | agefotostock The Leviathan of Parsonstown, the 72 inch telescope built by William Parsons, 3rd Earl of Rosse, Stock Photo, Picture And Rights Managed Image. Pic. XY2-3847329 | agefotostock](https://t1.thpservices.com/previewimage/gallil/70ebf20605fbbd397c71e5aed99cfd3e/xy2-3847329.jpg)
The Leviathan of Parsonstown, the 72 inch telescope built by William Parsons, 3rd Earl of Rosse, Stock Photo, Picture And Rights Managed Image. Pic. XY2-3847329 | agefotostock
![William Parsons, 3rd earl of Rosse, built his giant telescope, known as the 'Leviathan', Stock Photo, Picture And Rights Managed Image. Pic. MEV-10148579 | agefotostock William Parsons, 3rd earl of Rosse, built his giant telescope, known as the 'Leviathan', Stock Photo, Picture And Rights Managed Image. Pic. MEV-10148579 | agefotostock](https://previews.agefotostock.com/previewimage/medibigoff/31d96522cc892505f0f8bf1ccd64e303/mev-10148579.jpg)
William Parsons, 3rd earl of Rosse, built his giant telescope, known as the 'Leviathan', Stock Photo, Picture And Rights Managed Image. Pic. MEV-10148579 | agefotostock
![Portrait of William Parsons, 3rd Earl of Rosse (1800-1867) an Irish astronomer. His work was conducted at Birr Castle, where he had built the largest telescope - the Rosse Telescope/Great Telescope, until Portrait of William Parsons, 3rd Earl of Rosse (1800-1867) an Irish astronomer. His work was conducted at Birr Castle, where he had built the largest telescope - the Rosse Telescope/Great Telescope, until](https://c8.alamy.com/zooms/6/94d33259b7bf414fa322d377bff54cad/mr386c.jpg)
Portrait of William Parsons, 3rd Earl of Rosse (1800-1867) an Irish astronomer. His work was conducted at Birr Castle, where he had built the largest telescope - the Rosse Telescope/Great Telescope, until
![Portrait of William Parsons, 3rd Earl of Rosse (1800-1867) an Irish astronomer. His work was conducted at Birr Castle, where he had built the largest telescope - the Rosse Telescope/Great Telescope, until Portrait of William Parsons, 3rd Earl of Rosse (1800-1867) an Irish astronomer. His work was conducted at Birr Castle, where he had built the largest telescope - the Rosse Telescope/Great Telescope, until](https://c8.alamy.com/comp/MR386D/portrait-of-william-parsons-3rd-earl-of-rosse-1800-1867-an-irish-astronomer-his-work-was-conducted-at-birr-castle-where-he-had-built-the-largest-telescope-the-rosse-telescopegreat-telescope-until-the-completion-of-the-hooker-telescope-dated-19th-century-MR386D.jpg)
Portrait of William Parsons, 3rd Earl of Rosse (1800-1867) an Irish astronomer. His work was conducted at Birr Castle, where he had built the largest telescope - the Rosse Telescope/Great Telescope, until
![Telescope: Parsons, 1845. /Nthe Giant Telescope Built By The Astronomer William Parsons, 3Rd Earl Of Rosse, At Parsonstown, Ireland, In - Walmart.com Telescope: Parsons, 1845. /Nthe Giant Telescope Built By The Astronomer William Parsons, 3Rd Earl Of Rosse, At Parsonstown, Ireland, In - Walmart.com](https://i5.walmartimages.com/asr/a8aeccb5-42fd-4c29-b204-5468c11e2f82.3246de2690a268a02e43f7748b9f3068.jpeg?odnHeight=612&odnWidth=612&odnBg=FFFFFF)
Telescope: Parsons, 1845. /Nthe Giant Telescope Built By The Astronomer William Parsons, 3Rd Earl Of Rosse, At Parsonstown, Ireland, In - Walmart.com
![Birr Castle in the 19th Century – Mary Field & William Parsons and an Astronomical Leviathan”, John Burgess and Dr Bettie Higgs, 9 May 2022, 8 pm Birr Castle in the 19th Century – Mary Field & William Parsons and an Astronomical Leviathan”, John Burgess and Dr Bettie Higgs, 9 May 2022, 8 pm](https://corkastronomyclub.com/wp-content/uploads/2022/05/Leviathan.jpg)
Birr Castle in the 19th Century – Mary Field & William Parsons and an Astronomical Leviathan”, John Burgess and Dr Bettie Higgs, 9 May 2022, 8 pm
![Rob Cross Twitterissä: "William Parsons, the 3rd Earl of Rosse with the largest telescope in the world which he designed and built in the early 1840s at Birr Castle, Parsonstown in Co. Rob Cross Twitterissä: "William Parsons, the 3rd Earl of Rosse with the largest telescope in the world which he designed and built in the early 1840s at Birr Castle, Parsonstown in Co.](https://pbs.twimg.com/media/E0p44AOWEAA88-v.jpg:large)
Rob Cross Twitterissä: "William Parsons, the 3rd Earl of Rosse with the largest telescope in the world which he designed and built in the early 1840s at Birr Castle, Parsonstown in Co.
![A 72-inch reflecting telescope belonging to William Parsons, Third Earl of Rosse, at Birr Castle, Parsonstown, Ireland. Lord Rosse (1800-1867) was a British astronomer who had several telescopes built. This one, dubbed " A 72-inch reflecting telescope belonging to William Parsons, Third Earl of Rosse, at Birr Castle, Parsonstown, Ireland. Lord Rosse (1800-1867) was a British astronomer who had several telescopes built. This one, dubbed "](https://c8.alamy.com/comp/G15M5P/a-72-inch-reflecting-telescope-belonging-to-william-parsons-third-G15M5P.jpg)