Unknown, 1730 c.
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Photo

photo - whole telescope
Basic Info

Maker: Unknown

Year: 1730 c.

Year Range: -

Year Notes:

Manufacturing Location:

Signature:

Signature Notes:

Inscriptions:

No stand present.

Collection: National Maritime Museum

Accession #: NAV1530

Sources:

Royal Museums Greenwich. "Non-achromatic pocket telescope". http://collections.rmg.co.uk/collections/objects/43742.html [Accessed: June 2016].

Public Notes:

"This non-achromatic Galilean telescope has a dyed rayskin (shagreen) barrel and a single leather draw tube that is decorated with gold-tooled motifs. The mounts are made of turned horn while the other fittings are silvered brass and include sliding objective and eyepiece lens covers. Stop lines on the draw tube indicate the optimum working length of the telescope" (Royal Museums Greenwich).

Length (open):

Length (closed): 165

F-ratio:

Exit pupil:

Object status:

Optical Basics

Objective type: singlet

Optical style galilean

Physical style

Functional style

Materials: horn, leather, rayskin, shagreen, glass, brass, gold tooling

Optical/Lab Data

Drawtube data:

Drawtube notes:

Diameter: 27 mm

Objective Data

Eyepieces

Notes: