|
Date: |
|
Description: | Gregorian reflecting telescope, said to have made by John Hadley in 1726, although stylistic features would suggest a later date of c.1740. The telescope has a 2-inch metal speculum mirror with a focal length of 14 inches and a sharkskin covered brass tube with metal case. | License: | http://creativecommons.org/licenses/by-nc-sa/2.5/ | Subjects: | telescope - Gregorian telescope - reflecting | Temporal: | 1740-1744 | Source: | Science Museum | Creator: | Hadley, John | Identifier: | http://collectionsonline.nmsi.ac.uk/grab... | Go to resource |
|
More Like this...
-
-
-
-
-
-
7ft
Unfinished 6-inch Newtonian primary mirror…
-
-
-
-
10ft
An unfinished 9-inch Newtonian primary…
|