Willevaux, P. Petrus Fran[cisc]us de, 1703 c.
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photo - whole telescope
Basic Info

Maker: Willevaux, P. Petrus Fran[cisc]us de

Year: 1703 c.

Year Range: -

Year Notes:

Manufacturing Location: Italy

Signature: P. Petrus Frañ:US de Willeuaux Sacerdos Capuccinus Fecit / Anno. 1703.

Signature Notes:


No stand present.

Collection: Adler Planetarium and Astronomy Museum

Accession #: M-430


Public Notes:

Brown leather covered main barrel with floral gold tooling. Five green vellum draws with similar tooling, vellum chipped and flaking off. Objective lens missing. Wrapped string inside the eyepiece end.

Length (open): 1090

Length (closed): 312


Exit pupil:

Object status:

Optical Basics

Objective type: singlet

Optical style

Physical style spyglass

Functional style

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

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.: