Unknown, 1700 c.
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Photo

photo - whole telescope
Basic Info

Maker: Unknown

Year: 1700 c.

Year Range: -

Year Notes:

Manufacturing Location: Italy

Signature:

Signature Notes:

Inscriptions:

No stand present.

Collection: Adler Planetarium and Astronomy Museum

Accession #: M-425

Sources:

Public Notes:

Brown leather covered main barrel and ferrules heavily covered with fine gold tooling. Five draw tubes covered with combed marbled paper, some flaking off. Horn eyepiece cell. No lenses present at all.

Length (open): 1920

Length (closed): 565

F-ratio:

Exit pupil:

Object status:

Optical Basics

Objective type: singlet

Optical style

Physical style spyglass

Functional style

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

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.:
Complete

Eyepieces

Notes: