Maker: Unknown

Year: 1750 c.

Year Range: -

Year Notes:

Manufacturing Location:

Signature:

Signature Notes:

Inscriptions:

No stand present.

Collection: National Maritime Museum

Accession #: NAV1557

Sources:

Royal Museums Greenwich. "Non-achromatic telescope". http://collections.rmg.co.uk/collections/objects/43769.html [Accessed: June 2016].

Public Notes:

"The barrel of this hand-held telescope is made of paper in imitation of sharkskin, while the three draw tubes are made of paper. The fittings are of horn and brass, including a brass eyepiece cap, which is possibly of later date. The objective lens assembly is missing. Black stop lines on the draw tubes indicate the telescope's optimum working length" (Royal Museums Greenwich).

Length (open):

Length (closed): 295

F-ratio:

Exit pupil:

Object status:

Objective type: unconfirmed

Optical style

Physical style

Functional style

Materials: horn, paper, glass, brass

Drawtube data:

Drawtube notes:

Diameter: 47 mm

Objective Data

Eyepieces

Notes: