The University of Arizona
College of Optical Sciences

Collection Home > Telescopes > Multiple Draw > Three-Draw Telescope

 

Three-Draw Telescope

Signature T. Harris, London

Date circa 1800
Dimensions English Metric
Main Tube Length 8.7in 220mm
Main Tube Diameter 1.8in 46mm
Total Length 28.1in 715mm
Closed Length 9.1in 231mm
Objective Clear Aperture Diameter 1.4in 40mm

Description

This telescope has a round parallel wood barrel. The push-on cap for the objective lens is missing.  The objective is an achromatic doublet.  It has three brass draws, a four lens eyepiece, and a flared eyecup with a sliding cover. It is signed "T. Harris   London" on the eyepiece tube, with the eyecup to the left.

 


College of Optical Sciences
The University of Arizona, 1630 East University Boulevard, Tucson, Arizona U.S.A. 85721-0094

All contents copyright 2008  Arizona Board of Regents.