Dioptrice : pre-1775 refracting telescopes

pre-1775 refracting telescopes

e.g. “dollond”

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Nairne, Edward
Museu da Ciencia Universidade de Coimbra

Photo

photo - whole telescope

Basic Info

Maker: Nairne, Edward

Year:

Year Range: 1750-1768

Year Notes:

Manufacturing Location: London, England

Signature: Nairne London

Signature Notes:

Inscriptions:

Stand present.

Collection: Museu da Ciencia Universidade de Coimbra

Accession #: AST.I.043

Sources:

Correspondence w/ museum curator. Photo by Claudino Romeiro. See also http://museudaciencia.inwebonline.net/ficha.aspx?id=555&src=astronomia&tab=ciencia

Public Notes:

Currently the instrument is incomplete and disassembled in many pieces. 2.5 feet focus. 300x mag. Mirror diameter 4 inches and 8 lines.

Length (open):

Length (closed):

F-ratio:

Exit pupil:

Object status:

Optical Basics

Objective type: gregorian

Optical style

Physical style

Functional style

Materials:

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

metal

glass

other

Objective Data

Eyepieces