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

Maker: Unknown


Year Range: -

Year Notes:

Manufacturing Location:


Signature Notes:


No stand present.

Collection: Mathematisch-Physikalischer Salon / Staatliche Kunstsammlungen Dresden

Accession #: CIF 94


Helmut Schramm, Astronomische Instrumente Katalogue, Staatlicher Mathematisch-Physikalischer Salon, Dresden, Zwinger, item 22, pg. 19.

Public Notes:

Telescope tube in two portions, both parts with screw connection that also functions as focus. Both tubes of dark stained wood, simply decorated with turned profiles. Lens mounts of brass, both with shutters, both sides with friction springs of blue tempered steel. Objective simple biconvex. Eyepiece simple plane-concave lens. Lenses focus by means of snap ring of brass wire. Telescope cannot focus to infinity; greatest possible focusing at 0.6 to 0.7 meters.

Length (open): 63

Length (closed):


Exit pupil:

Object status:

Optical Basics

Objective type: singlet

Optical style galilean

Physical style pocket

Functional style


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 1 120.00 12.00



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 13.75 ± 0.25