Maker: Unknown

Year: 1650 c.

Year Range: -

Year Notes:

Manufacturing Location: Germany

Signature:

Signature Notes:

Inscriptions:

No stand present.

Collection: Louwman Collection of Historic Telescopes

Accession #: LC 84

Sources:

Louwman, P.J.K., and Zuidervaart, H.J., "A Certain Instrument to See Far: Four Centuries of Styling the Telescope Illustrated by a Selection of Treasures from the Louwman Collection of Historic Telescopes". Wassenaar, 2009. p.95. #89.

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.98. #84.

Public Notes:

"(Presumably) German telescope with tubes made of pasteboard. Main tube covered with black leather. Seven drawtubes, covered with thick parchment. No tooling has been used. All optical components are missing. The wooden objective fitting has a black iron attachment, probably a sun hood. The ferrules are covered with leather and lead or dark iron. Their diameter is diminishing towards the eyepiece. Length 95-280 cm, Ø 8.5 cm. Unsigned. Presumably mid-seventeenth century .

The small decline in diameter of the ferrules on this telescope is an indication for a relatively early date. In the seventeenth century this was done in order to stabilize a telescope in a wooden funnel on a stand. This was done by for instance instrument makers such as Johannes Wiesel from Augsburg. Later other solutions were invented" (Louwman and Zuidervaart, 2013).

Length (open): 2800

Length (closed): 950

F-ratio:

Exit pupil:

Object status:

Objective type: unconfirmed

Optical style

Physical style

Functional style

Materials: leather, parchment, pasteboard, wood, iron, unknown

Drawtube data:

Drawtube notes:

Objective Data

Eyepieces

Notes: