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Illustration of Herschel's 40-foot telescope - Stock Image - R102/0058 - Science Photo Library
Illustration of Herschel's 40-foot telescope - Stock Image - R102/0058 - Science Photo Library

William Herschell's 40 Foot Telescope 18th Century Poster | Zazzle.com
William Herschell's 40 Foot Telescope 18th Century Poster | Zazzle.com

William Herschel 40 Foot Telescope, 1880s - Stock Image - C044/7111 - Science Photo Library
William Herschel 40 Foot Telescope, 1880s - Stock Image - C044/7111 - Science Photo Library

William Herschel - Scientist of the Day - Linda Hall Library
William Herschel - Scientist of the Day - Linda Hall Library

William Herschel's reflecting telescope of 40 ft (12 m) focal length, 1789 (1807). Artist: Unknown Stock Photo - Alamy
William Herschel's reflecting telescope of 40 ft (12 m) focal length, 1789 (1807). Artist: Unknown Stock Photo - Alamy

astronomy, instruments, the 40 foot telescope of William Herschel, wood engraving, 19th century, instrument, science, Great Britain, 18th century, historic, historical Stock Photo - Alamy
astronomy, instruments, the 40 foot telescope of William Herschel, wood engraving, 19th century, instrument, science, Great Britain, 18th century, historic, historical Stock Photo - Alamy

William Herschel 40 Foot Telescope, 1880s - Stock Image - C044/7111 - Science Photo Library
William Herschel 40 Foot Telescope, 1880s - Stock Image - C044/7111 - Science Photo Library

William Herschel's 40-foot telescope © PAUL FARMER :: Geograph Britain and Ireland
William Herschel's 40-foot telescope © PAUL FARMER :: Geograph Britain and Ireland

40-foot telescope - Wikipedia
40-foot telescope - Wikipedia

File:40 foot telescope 120 cm 48 inch reflecting telescope William Herschel.png - Wikipedia
File:40 foot telescope 120 cm 48 inch reflecting telescope William Herschel.png - Wikipedia

Sir William Herschel Great 40 foot telescope reflecting telescopes 1785 1789 Observatory House Slough England primary mirror Stock Photo - Alamy
Sir William Herschel Great 40 foot telescope reflecting telescopes 1785 1789 Observatory House Slough England primary mirror Stock Photo - Alamy

File:William Herschel Museum - 40-foot telescope model 1.jpg - Wikimedia Commons
File:William Herschel Museum - 40-foot telescope model 1.jpg - Wikimedia Commons

The Forty-Foot Telescope at Slough. Photographed by Sir John F.W. Herschel photographed 9 September 1839; this print made in August 1890 | Sir John Frederick William HERSCHEL
The Forty-Foot Telescope at Slough. Photographed by Sir John F.W. Herschel photographed 9 September 1839; this print made in August 1890 | Sir John Frederick William HERSCHEL

Sir William Herschel's forty-foot telescope at slough. - NYPL Digital Collections
Sir William Herschel's forty-foot telescope at slough. - NYPL Digital Collections

Original mirror for William Herschel's 40 foot telescope, 1785. at Science and Society Picture Library
Original mirror for William Herschel's 40 foot telescope, 1785. at Science and Society Picture Library

File:PSM V09 D079 Herschel 40 foot telescope at slough.jpg - Wikipedia
File:PSM V09 D079 Herschel 40 foot telescope at slough.jpg - Wikipedia

A Giant of Astronomy | Science History Institute
A Giant of Astronomy | Science History Institute

Herschel's 40 foot telescope, 19th Century illustration - Stock Image - C048/2017 - Science Photo Library
Herschel's 40 foot telescope, 19th Century illustration - Stock Image - C048/2017 - Science Photo Library

File:William Herschel Museum - 40-foot telescope model.jpg - Wikimedia Commons
File:William Herschel Museum - 40-foot telescope model.jpg - Wikimedia Commons

William Herschel - Scientist of the Day - Linda Hall Library
William Herschel - Scientist of the Day - Linda Hall Library

Herschel's 40-foot telescope, 1789 - Stock Image - C009/0530 - Science Photo Library
Herschel's 40-foot telescope, 1789 - Stock Image - C009/0530 - Science Photo Library

William's Discoveries | Multiwavelength Astronomy
William's Discoveries | Multiwavelength Astronomy

40-foot telescope - Wikipedia
40-foot telescope - Wikipedia

Great Forty-Foot Telescope | Multiwavelength Astronomy
Great Forty-Foot Telescope | Multiwavelength Astronomy

Original mirror for William Herschel�s forty-foot telescope, 1785. — Weasyl
Original mirror for William Herschel�s forty-foot telescope, 1785. — Weasyl

William Herschel's 40 foot telescope at Slough, Berkshire, 1795. at Science and Society Picture Library
William Herschel's 40 foot telescope at Slough, Berkshire, 1795. at Science and Society Picture Library

William Herschel's 40 foot telescope, also known as the Great Forty Foot telescope, was a reflecting telescope constructed between 1785 and 1789 at Observatory House in Slough, England. It used a 47
William Herschel's 40 foot telescope, also known as the Great Forty Foot telescope, was a reflecting telescope constructed between 1785 and 1789 at Observatory House in Slough, England. It used a 47