Mathematisch-Physikalischer Salon / Staatliche Kunstsammlungen Dresden Arrow right Arrow left

photo - whole telescope
Basic Info

Maker: Unknown


Year Range: 1725-1750

Year Notes:

Manufacturing Location:


Signature Notes:


No stand present.

Collection: Mathematisch-Physikalischer Salon / Staatliche Kunstsammlungen Dresden

Accession #: CIF 112


Field research.

Public Notes:

White, Galuchat style main tube. Draws covered in green vellum, with draws 1 and 2 ending in lignum vitae stops. Eyepiece may reverse, but is not so marked.

Length (open):

Length (closed):


Exit pupil:

Object status:

Optical Basics

Objective type: singlet

Optical style

Physical style

Functional style

Materials: lignum vitae, vellum, glass

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 1.65 1.68 1.74 575.12 3.00 26.00



Eyepiece 1
fD focal length (mm): free aperture (mm): full aperture (mm): s spacing (mm): CA curvature (diopters): CB curvature (diopters): M magnification: FOV field of view (degrees): Thickness:
Lens 1 42.15 13.64
Lens 2 50.58 19.00 107.00 18.24
Lens 3 51.41 18.00 105.00 18.28 18.27
Lens 4 43.30 15.00 21.97 21.92