Day, John, 1743 c.20
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Photo

photo - whole telescope
Basic Info

Maker: Day, John

Year: 1743 c.20

Year Range: -

Year Notes:

Manufacturing Location: England

Signature: I.DAY

Signature Notes:

Inscriptions:

No stand present.

Collection: Coll. Willach

Accession #: 1781

Sources:

Project investigation

Public Notes:

One of John Day's only surviving telescopes. Three lens eyepiece with missing objective.

Length (open):

Length (closed):

F-ratio:

Exit pupil:

Object status:

Optical Basics

Objective type: unconfirmed

Optical style

Physical style

Functional style

Materials: pasteboard, gold tooling, glass, wood, vellum

Optical/Lab Data

Drawtube data:

Drawtube notes:

Objective Data

Eyepieces

Notes: