Octagonal Reverse Taper Telescope

Signature

Date

circa 1750

Dimensions

English

Metric

Main Tube Length

36.0in

914mm

Main Tube Diameter (objective end)

1.3in

33mm

Main Tube Diameter (eyepiece end)

1.6in

41mm

Total Length

43.0in

1092mm

Closed Length

37.5in

953

Objective Diameter

0.6in

15mm

Description

This telescope has an octagonal reverse-tapered mahogany barrel. The brass objective lens cell had a built-in slide cover, but it is missing. The objective is a single non-achromatic lens. It has one segmented draw (without a retainer), a three lens eyepiece, and a bulbous style eyecup, missing its slide cover. The middle lens in the eyepiece is a replacement. It is not signed by the maker.

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