
Title
The testing of glass for the 26-inch refractor built by Alvan Clark
Caption
Engraving depicting the testing of glass for the 26-inch refractor built by Alvan Clark. Alvan Clark (1804-1887) an American astronomer and telescope maker. Dated 19th Century
Date
19th century
Credit line
Photo12/Ann Ronan Picture Library
Reference
ARP23A16_212
License type
Rights managed
Available size
60,0Mb (3,4Mb) / 21,2in x 11,0in / 6352 x 3302 (300dpi)