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
Transparency, 40"x51 1/2", of Crab Nebula in Taurus (M.1. N.G.C. 1952) photographed in red light by the 200-inch Hale telescope Transparency, 40"x51 1/2"
Transparency, 15"x12", Modern Astronomers (from photo taken at Royal Observatory) Transparency, 15"x12", Modern Astronomers (from photo taken at Royal Observatory)
Transparency, 40"x51 1/2", of Spiral galaxy in Pegasus, N.G.C. 7217, photographed by the 200-inch Hale telescope Transparency, 40"x51 1/2"