Unknown, 1650 c.
Louwman Collection of Historic Telescopes Arrow right Arrow left
Photo

photo - whole telescope
Basic Info

Maker: Unknown

Year: 1650 c.

Year Range: -

Year Notes:

Manufacturing Location:

Signature:

Signature Notes:

Inscriptions:

No stand present.

Collection: Louwman Collection of Historic Telescopes

Accession #: LC 14

Sources:

Louwman, P. J. K., and Zuidervaart, H. J. "A Certain Instrument to See Far: Four Centuries of Fashioning the telescope, Illustrated by a Selection of Treasures from the Louwman Collection of Historic Telescopes". Wassenaar. p. 58. #30.

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. 35, #14.

Public Notes:

"Telescope with fixed focal length, made of carved ivory. Length 9 cm. Ø 2,5 cm. Unsigned. Middle of the 17th century" (Louwman and Zuidervaart, 2013, p. 35).

Length (open): 90

Length (closed):

F-ratio:

Exit pupil:

Object status:

Optical Basics

Objective type: singlet

Optical style

Physical style pocket

Functional style

Materials: ivory, glass

Optical/Lab Data

Drawtube data:

Drawtube notes:

Objective Data

CA curvature (diopters): CB curvature (diopters): PD lens power (diopters): fD focal length (mm): t thickness (mm): free aperture (mm): full aperture (mm): nD refractive index: ν Abbe No.:
Lens 1 25.00

Eyepieces

Notes: