Title

Reflecting telescope of 40 ft

Caption

Reflecting telescope of 40 ft/12 m focal length, 1789. [1807]. Built by the German born English astronomer, this instrument was the largest in the world, had a 4 ft/1.2 m mirror. Herschel made observations with this telescope but made more use of a smaller 18 in/46 cm instrument. From "The Edinburgh Encyclopaedia". (Edinburgh, 1807-1829). Engraving.

Info+

Photos12.com - Ann Ronan Picture Library

Credit line

Photo12/Ann Ronan Picture Library

Reference

ARP07104_460001282

License type

Rights managed

Available size

30,5Mb (1,8Mb) / 10,0in x 11,8in / 3011 x 3543 (300dpi)