Pocket telescope
This non-achromatic telescope has three draw tubes. The vellum barrel has been dyed with a red and green mottled pattern and is further decorated with gold-tooled motifs. The other fittings are of turned wood. The ring around the largest draw tube appears to be of the same diameter as the barrel, which is a feature of telescopes made before about 1660.
The screw-on caps for the eyepiece and objective lenses are both missing, and the objective lens appears to be a modern replacement.
The relatively short length of the telescope when in use suggests that it was meant for terrestrial rather than astronomical use.
The screw-on caps for the eyepiece and objective lenses are both missing, and the objective lens appears to be a modern replacement.
The relatively short length of the telescope when in use suggests that it was meant for terrestrial rather than astronomical use.
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Object Details
ID: | NAV1553 |
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Collection: | Astronomical and navigational instruments |
Type: | Pocket telescope |
Display location: | Not on display |
Creator: | Unknown |
Date made: | circa 1660; circa 1680 |
Credit: | National Maritime Museum, Greenwich, London, Caird Collection |
Measurements: | Length: 232 mm (closed), 604 mm (open, approx); Diameter: 35 mm (barrel) |
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