Photograph of siderostat by Foucault of the Paris Observatory [mounted with 1876-1001/3/4] Photograph of siderostat by Foucault of the Paris Observatory 1876
Photograph of 18" Siderostat in glazed frame 17 1/4" x 21 1/4" Photograph of 18" Siderostat in glazed frame 17 1/4" x 21 1/4" 1921
Photographs (2) of a siderostat constructed by Messrs Cooke and Sons of York, for the Royal Society Photographs (2) of a siderostat constructed by Messrs Cooke and Sons of York
Photograph of siderostat by T. Cooke and Sons, Royal Society [mounted with 1876-1001/2/4] Photograph of siderostat by T Cooke and Sons, Royal Society 1876
One of two photographs of a siderostat constructed by Messrs Cooke and Sons of York, for the Royal Society One of two photographs of a siderostat constructed by Messrs Cooke and Sons of York
One of two photographs of a siderostat constructed by Messrs Cooke and Sons of York, for the Royal Society One of two photographs of a siderostat constructed by Messrs Cooke and Sons of York