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One of three photographs of Astronomical universal circles by F.W. Breithaupt & Sohn of Hessen-Kassel at the Strasbourg Observatory.

One of three photographs of Astronomical universal circles

1876
One of three photographs of Astronomical universal instruments by F.W. Breithaupt & Sohn of Hessen-Kassel at the Strassbourg Observatory.

One of three photographs of Astronomical universal instruments

1876
Photograph of Universal Circle (Altazimuth) used in the English Transit of Venus expedition of 1874 [mounted with 1876-1002/3/4]

Photograph of Universal Circle

1876
Airy's altazimuth telescope and mounting, incomplete

Airy's altazimuth telescope and mounting

1847
One of three photographs of Astronomical universal instruments by F.W. Breithaupt & Sohn of Hessen-Kassel at the Strassbourg Observatory.

One of three photographs of Astronomical universal instruments

1876
Universal instrument by William Simms, London; double circle 15in. diameter, base circle 16in. diameter.

Universal instrument by William Simms

1821-1826
One of three photographs mounted in a glazed frame showing instruments at the Royal Observatory Greenwich around 1914. Christie's Altazimuth instrument (universal) made by Troughton & Simms May in 1896, of 8-inch aperture and 8-feet focal length viewed towards the eyepiece

[instruments at the Royal Observatory Greenwich]

1914
One of three photographs mounted in a glazed frame showing instruments at the Royal Observatory Greenwich around 1914. Christie's Altazimuth instrument (universal) made by Troughton & Simms May in 1896, of 8-inch aperture and 8-feet focal length viewed towards the eyepiece and lifted out of its pivots.

[instruments at the Royal Observatory Greenwich]

1914