One of two photograph of an equatorial telescope by Troughton & Simms, London, used on the 1874 Transit of Venus Expeditions dispatched by the Royal Society, London. One of two photograph of an equatorial telescope by Troughton & Simms 1876
One of two photograph of an equatorial telescope by Troughton & Simms, London, used on the 1874 Transit of Venus Expeditions dispatched by the Royal Society, London. One of two photograph of an equatorial telescope by Troughton & Simms 1876
Drawing of an equatorially mounted 1 metre reflecting telescope with dome, made for the Nikolaieff Observatory in the Crimea, Russia by Sir Howard Grubb & Sons Ltd. Drawing of an equatorially mounted 1 metre reflecting telescope with dome