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’.

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
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