Campani, Giuseppe, 1675 c.+25
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Photo

photo - whole telescope
Basic Info

Maker: Campani, Giuseppe

Year: 1675 c.+25

Year Range: -

Year Notes:

Manufacturing Location: Italy

Signature: Giuseppe Campani in Roma

Signature Notes:

Inscriptions:

No stand present.

Collection: Louwman Collection of Historic Telescopes

Accession #: LC 60

Sources:

Project investigation;

Cocquyt,Tiemen. "400 Years of Telescopes" booklet, Zeeuws Museum, 2008. Item 10.

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.79-80. #65.

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.85. #60.

Public Notes:

"Main tube covered with red-brown coloured leather with gold tooling. Four drawtubes. The reversible eyepiece (used for two different magnifications) is covered with marbled paper. End pieces made of walnut. On the lens Ø 4 cm (diaphragm Ø 2.8 cm) is engraved the signature: ‘Giuseppe Campani in Roma’. On the fittings of the eyepiece the following text is written: Questo cannello si allunga è si scorta / secondo le viste(meaning: ‘This tube is elongated or shortened,regarding [the sharpness of] the eye’). On the other reversible part of the eyepiece (used for two magnifications, respectively 8 times and 15 times in diameter) can be read: Quando questa parte stà dentro al / cannello si uede logetto piu chiavo(meaning: ‘if this side is in the tube, the object is seen more clearly’) and in reverse on the other side: Quando questa parte stà dentro al / cannello si uedé l’oggetto più grande (meaning: ‘as this side is in the tube, the object is seen larger’). Last quarter of the seventeenth century" (Louwman and Zuidervaart, 2013).

Length (open): 1480

Length (closed): 450

F-ratio:

Exit pupil:

Object status:

Optical Basics

Objective type: singlet

Optical style terrestrial

Physical style

Functional style

Materials: leather, paper, pasteboard, wood, glass, gold tooling

Optical/Lab Data

Drawtube data:

Drawtube notes:

Objective Data

Eyepieces

Notes:

Eyepiece 1
fD focal length (mm): free aperture (mm): full aperture (mm): s spacing (mm): CA curvature (diopters): CB curvature (diopters): M magnification: FOV field of view (degrees): Thickness:
Lens 1 40.00 8.00
Eyepiece 2
fD focal length (mm): free aperture (mm): full aperture (mm): s spacing (mm): CA curvature (diopters): CB curvature (diopters): M magnification: FOV field of view (degrees): Thickness:
Lens 1 40.00 15.00