Dioptrice : pre-1775 refracting telescopes

pre-1775 refracting telescopes

e.g. “dollond”

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Vesdy, 1700 c.
National Maritime Museum, Greenwich (London), England
NAV1511

Dollond, 1770 c.
National Maritime Museum, Greenwich (London), England
NAV1639

Unknown, 1770 c.
National Maritime Museum, Greenwich (London), England
NAV1525

Short, James, 1752 c.+4
National Maritime Museum, Greenwich (London), England
AST0942

Dollond, 1760 c.
National Maritime Museum, Greenwich (London), England
NAV1656

Watkins, Francis, 1760 c.
National Maritime Museum, Greenwich (London), England
NAV1539

Unknown, 1710 c.
National Maritime Museum, Greenwich (London), England
NAV1578

Cunigham, Jacob, 1661 c.
National Maritime Museum, Greenwich (London), England
NAV1547

Wright, Thomas, 1710 c.+38
National Maritime Museum, Greenwich (London), England
AST0951

Dollond, 1760 c.
National Maritime Museum, Greenwich (London), England
NAV1554

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

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