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Polygonal telescope
The octagonal barrel of this achromatic telescope is made of mahogany and is slightly tapered. It has a single brass draw tube and brass fittings, including a sliding eyepiece cover. The objective lens cap is missing. The maker’s name appears on the draw tube as ‘Dollond / London’.
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Object details
| ID: | NAV1639 |
|---|---|
| Collection: | Astronomical and navigational instruments |
| Type: | Polygonal telescope |
| Display location: | Not on display |
| Creator: | Dollond & Aitchison |
| Date made: | circa 1770 |
| Credit: | National Maritime Museum, Greenwich, London |
| Measurements: | Overall: 648 mm; Diameter: 35 mm x .5 kg |
| Parts: | Polygonal telescope |