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Large Diffraction Astronomical Spectroscope to Thorp's design with two prism

Large Diffraction Astronomical Spectroscope to Thorp's design with two prism

1910-1920
Photograph of a spectroscope with 5 prisms

Photograph of a spectroscope with 5 prisms

1876
Photograph of spectroscope

Photograph of spectroscope

1876
Photograph of spectroscope

Photograph of spectroscope

1876
Photograph of a spectroscope

Photograph of a spectroscope

1876
Constant-deviation spectroscope

Constant-deviation spectroscope

1950-1975
Mystery brass spectroscope or similar device with two prisms and auxilary mirror

Mystery brass spectroscope or similar device with two prisms and auxilary mirror

1890-1920
Evershed Solar Spectroscope for viewing prominences by Adam Hilger Ltd., London with wooden box (RAS No.526, Allen No.20). Presented to the Royal Astronomical Society in 1945 by Miss G.R.Allen.

Evershed Solar Spectroscope for viewing prominences by Adam Hilger Ltd.

1910-1920
Spectroscope for "Twin Equatorial" Telescope, 1885. Made by Sir Howard Grubb, consisting of a 20in. Reflecting Telescope and a 7in. Refracting Telescope (by Cooke) mounted together on one equatorial stand. With Grubb electric control gear

Spectroscope for "Twin Equatorial" Telescope

1885
Spectroscope with camera in aluminium and brass, signed by Hammersley, Islington, London and by W. Ottway and Co., Orion Works, Ealing, with wooden case. Listed as instrument no.23 at the Solar Physics Observatory, South Kensington before being acquired by the Norman Lockyer Observatory, Sidmouth Devon.

Spectroscope with camera in aluminium and brass

1890-1900
Brass astronomical spectroscope from Norman Lockyer Observatory with eleven prism train in two fitted wooden cases.

Brass astronomical spectroscope

1870-1890
Slit spectroscope

Slit spectroscope

1950-1975
Spectroscope by Browning for Aurora, H.O.^.3. portable form, on brass folding tripod allowing for horizontal and vertical rotation of instrument, direct vision compound prism tube is engraved "John Browning, London. Instrument detachable into 3 parts, telescope prism and collinator, instrument when closed is 18" long and 15" high, when on stand, in fitted mahogany case

Spectroscope by Browning for Aurora

1870-1890