Reflecting telescope signed ‘Gorg Adams’
Stock Number: 430207
P.O.A.
Second part- eighteenth century Gregorian type reflecting telescope with detachable eyepiece and secondary mirror, signed ‘Gorg Adams’.
Dimensions
Length barrel: 65,5 cm (25,8 in)
Circa
Ca. 1770
Maker
Gorg Adams
Country of manufacture
UK and Ireland
Description
Second part- eighteenth century Gregorian type reflecting telescope with detachable eyepiece and secondary mirror, signed ‘Gorg Adams’.
A Gregorian reflecting telescope is a type of telescope that uses mirrors to gather and focus light, allowing astronomers to observe distant objects in the sky. It is named after its inventor, James Gregory, and it consists of two main mirrors: a primary concave mirror and a secondary convex mirror. It has a detachable compound eyepiece and comes with a spare one, there is also a spare secondary mirror. Focusing by a rod attached to the barrel. The telescope is attached on a single stem stand with three folding legs.
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Small brass Gregorian telescopes were popularised by the famous maker James Short from about 1740 to his death in 1768. Short sold his telescopes to those who could afford his high prices. This telescope though by a different maker is of a similar design to a typical one by Short including the simple azimuth mounting. This mounting adapts well to terrestrial use, but not so well to any attempt to use the telescope for serious astronomical research.
The length of the barrel is 65,5 cm (25,8 in) and the diameter is 11 cm (4,3 in) which makes this an unusually big model. Measurements of the wooden box are 25,5 x 71,5 x 17,5 cm.
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Dealer information
Van Leest Antiques
Van Leest Antiques
Van Leest Antiques, based in Utrecht in the Netherlands, specialises in antique scientific and medical instruments. Their collection covers mainly scientific and medical antique instruments: barometers, globes and planataria, nautical instruments, anatomical models, and pharmacy items. Toon Van Leest travels regularly in Europe and visits trade fairs, auctions, and antique dealers to collect stock and to find pieces to fulfil his clients' unusual requests.
As well as being an avid antique collector and dealer, Toon Van Leest is also a dentist. He believes that antiques are a stable investment, not reliant on trends or fashion, and have truly lasting value. Above all, he says, antiques are timeless and never lose their beauty.
