telescope

C.H. Clark Scope

Lethbridge, 1960 Sept 27.

Homemade Equatorial with Mrs. Clark in charge.

The setting circles are made from sheet aluminum. The gears are steel worm and gears made from sheet brass held in contact by spring tension.

Good seeing,

CHC

CH Clark

1788-10th Ave. S., Alta.

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ToV Reflector with Heliometer 1760s-1770s

The Heliometer was a split-image micrometer which fit on the objective end of a telescope. It was used to measure angles. It was pretty much the most advanced such instrument for measuring angles at the time of the 1761 and 1769 transits of Venus. Image courtesy of Specula astronomica minima (©Specula astronomica minima).

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Wadsworth Telescope

Dr. Wadsworth's 12½-inch reflector in Simcoe, Ontario.This photo was published in the RASC Selected Papers and Proceedings, 1902-03.

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Toronto Observatory Telescope

This photo was published in the RASC Selected Papers and Proceedings, 1902-03.

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Marsh Telescope #1

Interior view of Dr. Marsh's observatory showing the Brashear 5-inch telescope.This photo was published in the RASC Selected Papers and Proceedings, 1902-03.

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Lantern 18

The 8-inch telescope camera. Louiseville P.Q., 1932 Aug 31.

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Scatliff and Scope

John Scatliff and his antique 2.75-inch refractor. Photo by James Steffensen.

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Professor Jackson

Prof. Robert Jackson (U of Minnesota) and his telescope. Photo by James Steffensen.

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Spectrograph

Dr. Millman standing beside spectrograph, Dr. Heard on ladder in the 74-inch telescope dome.

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Telescope at CNE

CNE, York U. Archives, Toronto Telegram Collection, box 482, file 319.

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