Unsigned, 1735 c.15
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Photo

photo - whole telescope
Basic Info

Maker: Unsigned

Year: 1735 c.15

Year Range: -

Year Notes:

Manufacturing Location: France

Signature:

Signature Notes:

Inscriptions:

No stand present.

Collection: Adler Planetarium and Astronomy Museum

Accession #: M-459

Sources:

Public Notes:

Similar to M-422 but without fleur-de-lys decorations. Tooling on the draws. Objective lens missing.

Length (open): 560

Length (closed): 233

F-ratio:

Exit pupil:

Object status:

Optical Basics

Objective type: singlet

Optical style

Physical style spyglass

Functional style

Materials: gold tooling, glass, wood, vellum, shagreen, pasteboard, leather

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.:
Lens 1 305.00
Complete

Eyepieces

Notes: