Maker: Unknown

Year: 1750 c.

Year Range: -

Year Notes:

Manufacturing Location: France

Signature:

Signature Notes:

Inscriptions:

No stand present.

Collection: National Maritime Museum

Accession #: NAV1524

Sources:

Royal Museums Greenwich. "Non-achromatic telescope". http://collections.rmg.co.uk/collections/objects/43736.html [Accessed: June 2016].

Public Notes:

"The barrel of this non-achromatic telescope is covered in rayskin (shagreen) that has been dyed red, while the three draw tubes are made of green vellum. Black stop lines on the draw tubes indicate the optimum working length of the telescope. The wood and brass fittings include sliding eyepiece and objective lens covers" (Royal Museums Greenwich).

Length (open): 655

Length (closed): 245

F-ratio:

Exit pupil:

Object status:

Objective type: N/A

Optical style

Physical style

Functional style

Materials: rayskin, vellum, brass, glass, wood, shagreen

Drawtube data:

Drawtube notes:

Diameter: 36 mm (barrel)

Objective Data

Eyepieces

Notes: