Unknown, 1850 c.
Louwman Collection of Historic Telescopes Arrow right Arrow left

photo - eyepiece
Basic Info

Maker: Unknown

Year: 1850 c.

Year Range: -

Year Notes:

Manufacturing Location: Japan


Signature Notes:


No stand present.

Collection: Louwman Collection of Historic Telescopes

Accession #: LC 258


Project investigation.

Louwman, P.J.K., and Zuidervaart, H.J., "A Certain Instrument for Seeing Far: Four Centuries of Styling the Telescope Illustrated by a Selection of Treasures from the Louwman Collection of Historic Telescopes". Wassenaar, 2013. p.190. #260.

Public Notes:

"Japanese telescope. Black lacquered main tube made of cedar wood, with three black lacquered drawtubes. Rich gold tooling. With protective caps and wooden casing. Length 47/124 cm, Ø 8 cm. Unsigned. First half of the nineteenth century" (Louwman and Zuidervaart, 2013).

Length (open): 1240

Length (closed): 470


Exit pupil:

Object status:

Optical Basics

Objective type: unconfirmed

Optical style

Physical style

Functional style

Materials: wood, lacquer, glass, gold tooling, horn

Optical/Lab Data

Drawtube data:

Drawtube notes:

Objective Data