28-inch visual refractor telescope, Royal Observatory Greenwich

B5698-F

28-inch visual refractor telescope, Royal Observatory Greenwich Long Caption: This is a 28-inch visual refracting telescope, currently mounted in the south east equatorial dome at the Royal Observatory Greenwich. It is the seventh largest refractor in the world and was used almost exclusively for double star observation. Credit line: © National Maritime Museum, Greenwich, London. Object: AST0932 Artist: Sir Howard Grubb; Ransomes & Sims Date: 1893 Medium: cast iron; steel Size: Overall: 8200 mm Click here to buy a bespoke print of this image.