Dioptrice : pre-1775 refracting telescopes

pre-1775 refracting telescopes

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Ribright, Thomas, 1780 c.
Louwman Collection of Historic Telescopes, Wassenaar, The Netherlands
LC 223

Storer, William, 1780 c.
Louwman Collection of Historic Telescopes, Wassenaar, The Netherlands
LC 224

Sykes, Henry, 1785 c.
Louwman Collection of Historic Telescopes, Wassenaar, The Netherlands
LC 226

van der Bildt, Bauke Eisma, 1800 c.
Louwman Collection of Historic Telescopes, Wassenaar, The Netherlands
Middelburg 17

Dollond, 1800 c.+25
Louwman Collection of Historic Telescopes, Wassenaar, The Netherlands
LC 183

Unknown, 1800 c.+50
Louwman Collection of Historic Telescopes, Wassenaar, The Netherlands
LC 260

Watkins & Hill, 1800 c.+50
Louwman Collection of Historic Telescopes, Wassenaar, The Netherlands
LC 383

Adams, Dudley, 1803
Louwman Collection of Historic Telescopes, Wassenaar, The Netherlands
LC 211

Unknown, 1850 c.
Louwman Collection of Historic Telescopes, Wassenaar, The Netherlands
LC 258

Dollond, 1850 c.
Louwman Collection of Historic Telescopes, Wassenaar, The Netherlands
LC 187

Troughton & Simms, 1850 c.25
Louwman Collection of Historic Telescopes, Wassenaar, The Netherlands
LC 358

Hofmann, J. G., 1860 c.
Louwman Collection of Historic Telescopes, Wassenaar, The Netherlands
LC 322

Unknown, 1900 c.
Louwman Collection of Historic Telescopes, Wassenaar, The Netherlands
LC 190

Spindler & Hoyer, 1930 c.
Louwman Collection of Historic Telescopes, Wassenaar, The Netherlands
LC 335

Watkins, Unconfirmed
Louwman Collection of Historic Telescopes, Wassenaar, The Netherlands
PL.10

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.

+ Include in full text search:	Maker Manufacturing Location Description Signature Accession Public notes
+ Look for Blank Fields:	Maker Signature Year Manufacturing Location Inscriptions Provenance Drawtube Notes Public Notes Private Notes Objective Focal Length Eyepiece Focal Length Objective Notes Eyepiece Notes Magnification
+ Look for Non-Blank Fields:	Maker Signature Year Manufacturing Location Inscriptions Provenance Drawtube Notes Public Notes Private Notes Objective Focal Length Eyepiece Focal Length Objective Notes Eyepiece Notes Magnification
+ 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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