Maker: Dollond, Peter

Year: 1769

Year Range: -

Year Notes:

Manufacturing Location: London, England

Signature:

Signature Notes:

Inscriptions:

No stand present.

Collection: Technoseum: Landesmuseum fur Technik und Arbeit in Mannheim

Accession #: EVZ:1983.0046-005

Sources:

Project investigation: communication with museum curator.

Public Notes:

Achromatic lens. Dollond held a patent for achromatic lenses from 1764 to 1772. Mayer used the 7 draw refractor first in St. Petersburg in 1769. Attachment for heliometer and original tripod lost. Tripod replaced by a replica in 1993. Objective diameter 100 mm.

Length (open): 2250

Length (closed): 2250

F-ratio:

Exit pupil:

Object status:

Objective type: unconfirmed

Optical style

Physical style

Functional style

Materials: mahogany, glass, brass

Drawtube data:

Drawtube notes:

Objective Data

Eyepieces

Notes: