1.375-inch telescope objective
Date: 1890-1910
Inventory Number: 2007-1-0186
Classification: Telescope Objective
Dimensions:5.4 x 5.4 x 3.6 cm (2 1/8 x 2 1/8 x 1 7/16 in.)
Description:
This is a 1.375-inch objective lens formed of two cemented elements. The cement is crazing.
The cell has a front barrel for a sun shade. The flange behind this barrel is curvy on the backside where it meets a brass collar. The collar has three holes for the insertion of screws when attaching this objective cell to a telescope tube.