Unknown, 1725 c.
Louwman Collection of Historic Telescopes Arrow right Arrow left
Photo

photo - whole telescope
Basic Info

Maker: Unknown

Year: 1725 c.

Year Range: -

Year Notes:

Manufacturing Location: England

Signature:

Signature Notes:

Inscriptions:

No stand present.

Collection: Louwman Collection of Historic Telescopes

Accession #: LC 42

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.68.
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.76.

Public Notes:

"English telescope. The main tube of the telescope is part of the casing, which is completed by two extended end caps. These parts are covered with grey coloured ray skin. The other tubes (among which three drawtubes) are covered with green coloured leather, richly tooled with floral motifs, stars and crescents. The gold tooling used is not mentioned by Turner (1966), but seems to be related to the Turner nos. 44 (flower), no. 47 (crescent with a five pointed star) and no. 51 (flower with leaves). Ivory fittings at both tube ends. Length 22-55 cm, Ø 4 cm. Unsigned, but an almost identical telescope in the British Museum is signed: ‘Howe’.

The maker of this telescope could be Joseph Howe, his son John Howe (I), or his grandson John Howe (II). They were working respectively in the periods 1667-1710; 1703-1733 and 1749-1768. As the telescope is presumably made in the first half of the eighteenth century , the second Howe is the most likely one. An almost identical – also unsigned – telescope is present in the MusEYEum, the collection of the British ‘College of Optometrists’ in London" (Louwman, and Zuidervaart, 2013).

Length (open): 550

Length (closed): 220

F-ratio:

Exit pupil:

Object status:

Optical Basics

Objective type: singlet

Optical style

Physical style

Functional style

Materials: ivory, leather, rayskin, gold tooling

Optical/Lab Data

Drawtube data:

Drawtube notes:

Objective Data

Eyepieces

Notes: