Telescope

Astronomy

Accession Number: 2019.ast.209 (DAA-0076)

Description:

This is a refracting telescope with a brass-coloured exterior. It is cylindrical along its length, with four extendable sections, each one broader than the last. When fully extended it is quite long. The objective lens, 4cm in diameter, is covered with a brass cap with a notch cut out of it to allow it to fit over the lens. The eyepiece has a small lens recessed slightly behind a round brass plate with a whole cut in the centre. This has a small rotating cover that can be slid aside via a small rod.

On one side of the broadest section of the tube, there is an angled section with a small hole in the centre.

Primary Materials:

Metal: Copper Alloy?, Metal: Iron Alloy, Glass

Markings: Written on the largest tube: “11”

Dimensions (cm): Length = 31, Diameter = 4.5

Function:

To make distant objects appear closer; the magnification of distant objects, such as planets or stars.

Condition:

Good: The surface of the instrument is slightly scratched, particularly on the largest tube, but there are a number of striations along the length of the tube from extending the instrument. The second smallest tube has a rectangular patch where the brass-coloured surface is worn or absent and the underneath is silver-coloured. There is some discolouration around this patch. The cover of the eyepiece lens is very loose and easily falls over the hole.

The central lens seemed to be discoloured or damaged with a mottled pattern.

Date of Manufacture: 20th Century

Provenance:

This telescope was likely purchased for use in teaching at the Department of Astronomy or the Dunlap Observatory in the first part of the 20th Century. If the former, it was moved to the David Dunlap Observatory at some point. They were then moved from the David Dunlap Observatory in Richmond Hill in 2008, upon the sale of the observatory. They were then stored at the Department of Astronomy and Astrophysics until 2017, when they were moved to a new storage location in McLennan Physical Laboratories.