Maker: Campani, Giuseppe

Year: 1689

Year Range: -

Year Notes:

Manufacturing Location: Rome, Italy

Signature: Guiseppe Campani in Roma, Anno 1689

Signature Notes:

Inscriptions:

No stand present.

Collection: Louwman Collection of Historic Telescopes

Accession #: LC 62

Sources:

Project investigation.

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.80. #66.

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.86. #61.

Public Notes:

"Very large Italian telescope made by Giuseppe Campani. Barrel and six octagonal drawtubes made of wood. Focussed at infinity , the telescope has a length of 6.7 m. The objective lens is signed: "Giuseppe Campani in Roma, Anno 1689". It has a diameter of 8.3 cm, a maximal thickness of 0.31 cm and a focal length of 6.13 m. The diaphragm has an aperture of 5.5 cm. The compound eyepiece has three lenses, which combined have a focal length of 71 or 125 mm, results in a magnification of 86 or 49 times in diameter respectively . At these magnifications the field of view has been established to be six and eleven arc minutes respectively . Dated 1689.

The late Campani-expert Silvio Bedini has characterized this telescope in a letter to Peter Louwman as "one of the finest, if not in fact the finest surviving long telescope by Campani"" (Louwman and Zuidervaart, 2013).

Length (open): 6700

Length (closed):

F-ratio:

Exit pupil:

Object status:

Objective type: singlet

Optical style terrestrial

Physical style polygonal

Functional style

Materials: wood, glass

Drawtube data:

Drawtube notes:

Objective Data

Eyepieces

Notes: