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There are currently 68 objects in the collection.

Heliotrope for the 1874 Dutch expedition on Reunion

Heliotrope for the 1874 Dutch expedition on Reunion

From the three heliotropes taken to Reunion two were identical. The instrumentmakers made also tight fit boxes as the heliotropes had a long journey to cover.

Leiden Observatory Instrumentmakers, Lei...

Heliotrope from the Leiden Observatory for the 1874 Dutch expedition to Reunion

Heliotrope from the Leiden Observatory for the 1874 Dutch expedition to Reunion

This is one of the three heliotropes made by the instrumentmakers of the Leiden Observatory.

Leiden Observatory instrumentmakers, Leiden, 1873

Museum Boerhaave V13161

Heliotrope used by the 1874 Dutch expedition on Reunion

Heliotrope used by the 1874 Dutch expedition on Reunion

The instrumentmakers of the Leiden Observatory made three heliotropes for the Dutch expedition to Reunion.

Leiden Observatory instrumentmakers, Leiden, 1873

Museum Boerhaave V10840

Instrument for transits by Stackpole, 1874

Instrument for transits by Stackpole, 1874

This elegant little instrument is marked "Stackpole & Brother New York 1522." It was made for American observers of the Transit of Venus of 1874. New it cost $215. The U.S. Naval Observatory transferr...

James Ferguson's diagram of the 1761 transit from various stations

James Ferguson's diagram of the 1761 transit from various stations

James Ferguson was renowned for the clarity of his astronomical explanations, diagrams and models. This diagram shows the appearance of the 1761 transit as seen from several different sites: London, t...

Lantern Slide

Lantern Slide

Lantern slide, moveable. Sold by Carpenter & Westley, 24 Regent Street, London. Gift of Bowdoin College.

This slide is marked with a paper label that reads: "no. 9. This Diagram shews the various Ecl...

Lantern Slide

Lantern Slide

Lantern slide, moveable. No maker's name. Gift of Colgate University, Department of Physics and Astronomy.

This slide is marked with a paper label that reads: "No. 9. This Diagram shews the various...

Lantern Slide

Lantern Slide

Lantern slide, moveable. No maker's name. Gift of Colgate University, Department of Physics and Astronomy.

This slide is wood, with a glass "Sun" inset. A sliding glass plate (missing) with painted...

Lecture demonstration of the 1769 transit by Benjamin Martin

Lecture demonstration of the 1769 transit by Benjamin Martin

Benjamin Martin devised a large demonstration of the appearance of the 1769 transit. The device was 7 by 5? feet in size and mounted on a wall in his shop where he gave lectures. It showed the appeara...

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