Dollond, 1766 c.
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Photo

photo - whole telescope
Basic Info

Maker: Dollond

Year: 1766 c.

Year Range: -

Year Notes:

Manufacturing Location: London, England

Signature: DOLLOND / LONDON

Signature Notes:

Inscriptions:

No stand present.

Collection: Coll. Willach

Accession #: 56

Sources:

Project investigation.

Public Notes:

Green rayskin. Rayskin of this size was very expensive, a noble gift. Crown forward. Adams is optician to the king. Dollond is optician to the Duke of York. Scope was gift to Duke's mistress. "HRH Duke of York's present to Mrs Chester at Knole 2nd Aug 1766" Earliest surviving four-lens eyepieces, rendering five-lens eyepiece obsolete. Corrected for spherical and chromatic aberration. Silvered rings, silver on black ivory.

Length (open):

Length (closed):

F-ratio:

Exit pupil:

Object status:

Optical Basics

Objective type: doublet (crown forward)

Optical style

Physical style

Functional style

Materials:

Optical/Lab Data

Drawtube data:

Drawtube notes:

Objective Data

Eyepieces

Notes: