One of three photographs mounted in a glazed frame showing instruments at the Royal Observatory Greenwich around 1914. Airy Transit Circle, made by Troughton & Simms and Ransome & May in 1850, of 8.1-inch aperture and 11-feet, 7-inch focal length viewed from the south 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
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
Eruptive prominence, photographed at the Kenwood Observatory, Chicago 1895, March 24, 22h. 40m. C.M.T. Eruptive prominence
Unmounted photograph 23" x 29 1/2" of the 72" reflecting telescope at the Dominion Astrophysical Observatory, Victoria, B.C. in Cassegrainian form as used in photographing Stella spectra Unmounted photograph 23" x 29 1/2" of the 72" reflecting telescope at the Dominion Astrophysical Observatory
Positive transparency of film, size 10" x 12", of Moon in the region of Clavius, Palomar 200" Hale Telescope Positive transparency of film
One of nineteen photographs from the Royal Observatory at the Cape of Good Hope, showing the monument marking the site of Sir John W. Herschel's telescope at Feldhausen, South Africa . One of nineteen photographs from the Royal Observatory at the Cape of Good Hope
One of nineteen photographs taken at the Royal Observatory, Cape of Good Hope, South Africa, showing the building with a shutter roof for the reversible transit circle by Cooke? One of nineteen photographs taken at the Royal Observatory
One of nineteen photographs taken at the Royal Observatory, Cape of Good Hope, South Africa, showing the reversible transit circle by Cooke Photograph of reversible transit circle