Speculum mirror for Gregorian telescope
Speculum mirror of 3-inch aperture for Gregorian telescope by James Short, London [138/878 = 12].
- Measurements:
-
overall: 12 x 75 mm
- Object Number:
- 1976-290 Pt1
- type:
- components , concave mirrors and metal mirrors
- Image ©
- The Board of Trustees of the Science Museum