Maker: Beltrami, Pietro

Year: 1750 c.

Year Range: -

Year Notes:

Manufacturing Location: Milan, Italy

Signature: Pietro Beltrami in Milano

Signature Notes:

Inscriptions:

No stand present.

Collection: Louwman Collection of Historic Telescopes

Accession #: LC 71

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.87-88. #76.

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.92. #71.

Public Notes:

"Main tube covered with black sharkskin and green coloured leather. Four drawtubes covered with so called kleisterpapier (‘paste paper’). Ferrules made of horn. Wooden end pieces. Signed on the objective: ‘Pietro Beltrami in Milano’. Length 27-93 cm, Ø 4 cm. Mid-eighteenth century .

A very large telescope, made in 1752 by Pietro Beltrami from Milan, is in the Luxottica collection. A carved silver spy-glass by Pietro Beltrami dated 1754 is in the collection (MusEYEum) of the British Optical Association" (Louwman and Zuidervaart, 2013).

Length (open): 930

Length (closed): 270

F-ratio:

Exit pupil:

Object status:

Objective type: singlet

Optical style

Physical style

Functional style

Materials: horn, leather, paper, pasteboard, sharkskin, wood, gold tooling

Drawtube data:

Drawtube notes:

Objective Data

Eyepieces

Notes: