![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/comp/2BE0HGR/72-inch-reflecting-telescope-at-birr-castle-parsonstown-ireland-leviathan-completed-in-1845-was-the-worlds-largest-telescope-until-the-early-20th-century-william-parsons-3rd-earl-of-rosse-june-17-1800-october-31-1867-was-an-anglo-irish-astronomer-he-inherited-an-earldom-and-a-large-estate-in-kings-county-ireland-when-his-father-lawrence-parsons-2nd-earl-of-rosse-died-in-1841-there-he-performed-astronomical-studies-and-discovered-the-spiral-nature-of-some-nebulas-today-known-to-be-spiral-galaxies-his-72-inch-telescope-leviathan-built-1845-was-the-worlds-largest-telesc-2BE0HGR.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 -
![Una vecchia incisione di un grande telescopio astronomico rifrangente progettato da Thomas Cooke nel 1800. E 'da un libro di ingegneria meccanica vittoriana del 1880. Thomas Cooke (1807–1868) è stato un produttore Una vecchia incisione di un grande telescopio astronomico rifrangente progettato da Thomas Cooke nel 1800. E 'da un libro di ingegneria meccanica vittoriana del 1880. Thomas Cooke (1807–1868) è stato un produttore](https://c8.alamy.com/compit/2d9dxct/una-vecchia-incisione-di-un-grande-telescopio-astronomico-rifrangente-progettato-da-thomas-cooke-nel-1800-e-da-un-libro-di-ingegneria-meccanica-vittoriana-del-1880-thomas-cooke-1807-1868-e-stato-un-produttore-di-strumenti-scientifici-britannico-con-sede-a-york-inghilterra-regno-unito-fondo-t-cooke-sons-una-societa-di-strumenti-scientifici-cooke-era-uno-dei-pionieri-della-realizzazione-di-grandi-telescopi-in-gran-bretagna-ha-costruito-con-successo-una-reputazione-per-la-loro-realizzazione-fece-un-telescopio-per-il-royal-observatory-greenwich-londra-e-un-altro-per-il-principe-alberto-2d9dxct.jpg)
Una vecchia incisione di un grande telescopio astronomico rifrangente progettato da Thomas Cooke nel 1800. E 'da un libro di ingegneria meccanica vittoriana del 1880. Thomas Cooke (1807–1868) è stato un produttore
![Amazon.com: Telescopio de camping de latón marítimo "to My Son" grabado con regalo, regalos del día de graduación para hijo, regalos de cumpleaños para hijo : Juguetes y Juegos Amazon.com: Telescopio de camping de latón marítimo "to My Son" grabado con regalo, regalos del día de graduación para hijo, regalos de cumpleaños para hijo : Juguetes y Juegos](https://m.media-amazon.com/images/I/81Z3BhwUe9L._AC_UF894,1000_QL80_.jpg)
Amazon.com: Telescopio de camping de latón marítimo "to My Son" grabado con regalo, regalos del día de graduación para hijo, regalos de cumpleaños para hijo : Juguetes y Juegos
![Telescopio SkyWatcher Maksutov 150/1800 NEQ5 GoTo Black Diamond – Valkanik | Tienda Online de Telescopios Telescopio SkyWatcher Maksutov 150/1800 NEQ5 GoTo Black Diamond – Valkanik | Tienda Online de Telescopios](https://valkanik.com/wp-content/uploads/2021/10/21102021192108364160.png)
Telescopio SkyWatcher Maksutov 150/1800 NEQ5 GoTo Black Diamond – Valkanik | Tienda Online de Telescopios
![BOSMA MK150/1800 professionale astronomia telescopio primario specchio HD EXOS 1 a 1.5 pollici giapporiale|Monocoli/binocoli| - AliExpress BOSMA MK150/1800 professionale astronomia telescopio primario specchio HD EXOS 1 a 1.5 pollici giapporiale|Monocoli/binocoli| - AliExpress](https://ae01.alicdn.com/kf/H9addaa9aa9b049849b49b55773257b06q/BOSMA-MK150-1800-professionale-astronomia-telescopio-primario-specchio-HD-EXOS-1-a-1-5-pollici-giapporiale.jpg_Q90.jpg_.webp)
BOSMA MK150/1800 professionale astronomia telescopio primario specchio HD EXOS 1 a 1.5 pollici giapporiale|Monocoli/binocoli| - AliExpress
![Telescope used by Lieutenant-General William Carr Beresford, 1800 (c) | Online Collection | National Army Museum, London Telescope used by Lieutenant-General William Carr Beresford, 1800 (c) | Online Collection | National Army Museum, London](https://collection.nam.ac.uk/images/960/124000-124999/124047.jpg)
Telescope used by Lieutenant-General William Carr Beresford, 1800 (c) | Online Collection | National Army Museum, London
![Telescopio Mak Black Diamond 150/1800 NEQ3-2 Pro GoTo SkyWatcher – Valkanik | Tienda Online de Telescopios Telescopio Mak Black Diamond 150/1800 NEQ3-2 Pro GoTo SkyWatcher – Valkanik | Tienda Online de Telescopios](https://valkanik.com/wp-content/uploads/2021/10/21102021192108265700.png)
Telescopio Mak Black Diamond 150/1800 NEQ3-2 Pro GoTo SkyWatcher – Valkanik | Tienda Online de Telescopios
![A c. 1800 lacquered brass reflecting Telescope - Antique Scientific Instruments and Globes 2015/05/18 - Estimate: EUR 1,000 to EUR 1,500 - Dorotheum A c. 1800 lacquered brass reflecting Telescope - Antique Scientific Instruments and Globes 2015/05/18 - Estimate: EUR 1,000 to EUR 1,500 - Dorotheum](https://www.dorotheum.com/fileadmin/lot-images/39D150518/normal/spiegelteleskop-nach-gregory-2795113.jpg)
A c. 1800 lacquered brass reflecting Telescope - Antique Scientific Instruments and Globes 2015/05/18 - Estimate: EUR 1,000 to EUR 1,500 - Dorotheum
![Bosma-telescopio astronómico de doble velocidad, 6 pulgadas, 150/1800 maksutov-cassegrain - AliExpress Bosma-telescopio astronómico de doble velocidad, 6 pulgadas, 150/1800 maksutov-cassegrain - AliExpress](https://ae01.alicdn.com/kf/Sa9d26a2d1c5b4e38af0554e190a4bac9V.jpg_640x640Q90.jpg_.webp)