Dioptrice

pre-1775 refracting telescopes

e.g. “dollond”

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+ Look for Non-Blank Fields: Maker
Signature
Year
Manufacturing Location
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Provenance
Drawtube Notes
Public Notes
Private Notes
Objective Focal Length
Eyepiece Focal Length
Objective Notes
Eyepiece Notes
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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

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brass
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silver tooling
unknown

glass

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other

marble
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+ 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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Virginia Museum of Fine Arts, Richmond, United States of America

 

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.