Maker: Unknown

Year: 1700 c.

Year Range: -

Year Notes:

Manufacturing Location:

Signature:

Signature Notes:

Inscriptions:

No stand present.

Collection: Louwman Collection of Historic Telescopes

Accession #: LC 169

Sources:

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.150. #169.

Public Notes:

"Spyglass with fixed focus. Tube made of lignum vitae(pockwood) with brass slides. Length 26 cm, Ø 4.5 cm. Unsigned" (Louwman and Zuidervaart, 2013). Screws together in middle.

"Comparable wooden ‘little perspectives’ are depicted on the 1683-trade card of John Yarwell. Presumably these kind of small telescopes were also used by sailors" (Louwman and Zuidervaart, 2013).

Length (open): 260

Length (closed):

F-ratio:

Exit pupil:

Object status:

Objective type: unconfirmed

Optical style galilean

Physical style spyglass

Functional style

Materials: lignum vitae, brass

Drawtube data:

Drawtube notes:

Objective Data

Eyepieces

Notes: