Unknown, 1725 c.
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Photo

photo - whole telescope
Basic Info

Maker: Unknown

Year: 1725 c.

Year Range: -

Year Notes:

Manufacturing Location: Italy / France

Signature:

Signature Notes:

Inscriptions:

No stand present.

Collection: Adler Planetarium and Astronomy Museum

Accession #: M-462

Sources:

Public Notes:

Red-orange main tube with horse and floral motifs. Three white vellum draws. Horn ferrules and lens cells. Measures: open 550 mm (without caps), and closed 240 mm with 29 mm diameter.

Length (open): 550

Length (closed): 240

F-ratio:

Exit pupil:

Object status:

Optical Basics

Objective type: singlet

Optical style

Physical style spyglass

Functional style

Materials: wood, pasteboard, paper, 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: