Maker: Unknown

Year: 1660 c.

Year Range: 1650-1700

Year Notes:

Manufacturing Location: England

Signature:

Signature Notes:

Inscriptions:

No stand present.

Collection: National Maritime Museum

Accession #: NAV1553

Sources:

Royal Museums Greenwich. "Hand-held telescope". http://collections.rmg.co.uk/collections/objects/43765.html. [Accessed: June 2016].

Public Notes:

Museum Description:
"This non-achromatic telescope has three draw tubes. The vellum barrel has been dyed with a red and green mottled pattern and is further decorated with gold-tooled motifs. The other fittings are of turned wood. The ring around the largest draw tube appears to be of the same diameter as the barrel, which is a feature of telescopes made before about 1660. The screw-on caps for the eyepiece and objective lenses are both missing, and the objective lens appears to be a modern replacement. The relatively short length of the telescope when in use suggests that it was meant for terrestrial rather than astronomical use" (Royal Museums Greenwich).

Objective Notes 2016:
Objective seems to be replacement.

Provenance:

Caird Collection

Length (open): 604

Length (closed): 232

F-ratio:

Exit pupil:

Object status:

Objective type: singlet

Optical style terrestrial

Physical style

Functional style

Materials: lignum vitae, parchment, pasteboard, vellum, wood, glass, gold tooling

Drawtube data:

physical lengths in mm:
starside to extension mark:
star-side tube diameter: 35
eye-side tube diameter:
ring diameter:

Drawtube notes:

Blind tooling. Likely it originally had equally diameter ferrules.

Objective Data

Eyepieces

Notes: