
4 0 c m
34cm
actual image size: 26cm x 32cm
Description
A selection of four miniature telescopes, a type of instrument that has been variously called an opera or prospect glas. These are small Galilean telescopes that provide a low magnification using a large convex front lens and a concave eyepiece lens. Small telescopes of this type were popular for viewing the stage from afar when at the theatre or opera house. They became popular as a status symbol in the 18th century and were made from a variety of materials including vellum, shagreen, lacquered ivory, horn, silver and bras.
Image Details
Image Ref.
10320617
© Science Museum / Science & Society Picture Library