Dioptrice : pre-1775 refracting telescopes

pre-1775 refracting telescopes

e.g. “dollond”

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Bevere, E. D., 1709
Utrecht University Museum

Photo

photo - objective

Basic Info

Maker: Bevere, E. D.

Year: 1709

Year Range: -

Year Notes:

Manufacturing Location: The Netherlands

Signature: E.D. Bevere 12 voet Anno 1709 Adriano Mels Dono Dedit

Signature Notes:

Inscriptions:

No stand present.

Collection: Utrecht University Museum

Accession #: LI-37.02

Sources:

Correspondence w/ museum curator.

Public Notes:

Slightly gray, double convex lens with bevel. Inscription along edge. Glass with many bubbles, polish looks good.

Length (open):

Length (closed):

F-ratio:

Exit pupil:

Object status:

Optical Basics

Objective type: singlet

Optical style

Physical style

Functional style

Materials: glass

Optical/Lab Data

Drawtube data:

Drawtube notes:

Objective Data

Eyepieces

Notes:

Additional Photos/Documents

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Dioptrice is made possible by the generous support of the National Science Foundation, the National Endowment for the Humanities, the Program in the History and Philosophy of Science at the University of Notre Dame, and the Adler Planetarium & Astronomy Museum.

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+ Year range:	1600 - 2014
+ Focal length range (mm):	0 - 2000
+ Free aperture range (mm):	0 - 2000
+ Full aperture range (mm):	1600 - 2014
+ Open length range (mm):	0 - 2000
+ Closed length range (mm):	0 - 2000
+ Categories:	Art Collection Book or Manuscript Instrument Collection
+ Materials:	organics bamboo black ivory bone boxwood ebony fish skin horn ivory lacquer leather lignum vitae mahogany paper parchment pasteboard rayskin shagreen sharkskin tortoiseshell vellum wood metal brass copper gilt gold leaf gold tooling iron platinum tooling silver silver tooling unknown glass glass rock crystal speculum other marble paint stone
+ Collection:
+ Objective type:	(all refractors) (all reflectors) (clear selection) N/A cassegrain doublet (crown forward) doublet (flint forward) doublet (unknown) gregorian herschelian newtonian singlet triplet unconfirmed unknown reflector

organics

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Objective Data

Eyepieces