Heliostat with spring driven clock drive for use with table top spectrometers by Adam Hilger Ltd. 1919
Photograph of the instruments used by the British expedition when observing the 1919 total solar eclipse in Brazil. 1919
Photograph showing a selection of scientific instruments from the Physical Cabinet (collection) of the Royal University of Padua, Italy. These include heliostats by Tessarolo and Silbermann, a projector by Duboscq, lamp by Carlevaris, lamp for producing Drummond's light, and regulator for an electric arc lamp. The print was supplied by Prof Rossetti for display at the 1876 Loan Exhibition held at the South Kensington Museums, London. Photograph showing a selection of scientific instruments from the Physical Cabinet of the Royal University of Padua 1876
Two photograph mounted together of an 18inch Coelostat, made for the Canberra Observatory, New South Wales by Sir Howard Grubb, Parsons & Company at their optical works in Newcastle-on-Tyne, England. Two photograph mounted together of an 18inch Coelostat 1921-1931
Photograph of Universal heliostat designed by Lord Blythswood [mounted with 1876-1001/2/3] Photograph of Universal heliostat designed by Lord Blythswood 1876
Modern clock heliostat with Japanese markings Modern clock heliostat with Japanese markings 1900-1930
Solar telescope consisting of heliostat with fixed mirror and extending lens, made for use in the 'Exploration Gallery' to project an image of the Sun into the display. Solar telescope consisting of heliostat with fixed mirror and extending lens 1975-1977
Photograph of the original Gravesande Heliostat in the Conservatoire des Arts et Metiers, Paris Photograph of the original Gravesande Heliostat in the Conservatoire des Arts et Metiers 1876