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Collection Home > Telescopes > Library and Tripod > Small Brass Library Telescope
Brass Library Telescope
| Signature | Dollond , London |
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| 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 | ||||
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Description |
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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