|
Date: |
|
Description: | This achromatic telescope has a mahogany barrel and a single brass draw tube. The other brass fittings include a sliding eyepiece cover and an objective lens cap. The maker's name is faintly engraved on the draw tube as 'J. Cox & Son, London'. The words 'Night or Day' are inscribed below, indicating that the telescope was designed for use in all light conditions and, therefore, has a relatively large objective lens to collect the maximum amount of light in poor seeing conditions.
Focal length: 32.2". O.G. diameter: 1.6". Barrel cracked.
caption: Day or night telescope
caption: Day or night telescope- draw tube inscription | Publisher: | "http://collections.rmg.co.uk/" | Rights holder: | "Royal Museums Greenwich" | Subjects: | Achromatic lens J. achromatic telescopes Day or night telescope Cox & Son | Source: | Royal Museums Greenwich | Identifier: | http://collections.rmg.co.uk/collections... | Go to resource |
|
|