Category of Astronomical Heritage: tangible immovableRoyal Observatory, Cape of Good Hope, Republic of South Africa Description Map Gallery Photoheliograph domeCalotype 1842Dallmeyer portrait lensDolland repeating transitSir David GillHeliometer domeHeliometer dome drawingHydraulic pumpLibrary, central roomMain BuildingMcClean BuildingMap (1888)Google imageIn the early 20th centuryRoss lensWeights and measures box