The University of Arizona
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Other Dollond Instruments


Brass Library Telescope

Signature Dollond , London

Date circa 1790
Number of Draws 1
Dimensions English Metric
Main Tube Length 28.3in 719mm
Main Tube Diameter 2.4in 60mm
Total Length 40.5in 1029mm
Closed Length 38.0in 965mm
Objective Clear Aperture Diameter 2.0in 52mm


This telescope has a round parallel lacquered brass barrel. The objective lens is an achromatic doublet with a push-on cap. It has a single brass draw with rack and pinion focusing by a thumbwheel. There is a separate terrestrial eyepiece tube, that screws into the end of the draw tube. It has four lenses and a slightly flared eyecup. There is also a sun filter that can be screwed onto the eyecup. The astronomical eyepiece tube is missing. It is signed "Dollond * London" on the brass back plate of the barrel. The telescope is mounted on a folding brass cabriole tabletop stand. It has a fitted mahogany case.


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