LIVERPOOL INTERNATIONAL EXHIBITION OF PHOTOGRAPHY.
Liverpool Mercury Friday 20th January 1888
What Liverpool has done in the art science of photography from its discovery in 1839 to the present jubilee year of photographic discovery.
Celestial photography moves in an orbit of its own by being a society by itself. Liverpool owns a bright luminary in the person of Mr Isaac Roberts of Maghull, who is now engaged in mapping the heavens.
The old Liverpool society (photographic ) laid the foundation of this work and the following extracts will show this:- Dr Edwards FCS read a paper on the collodian photographs of the Moon Surface. He said that about the year 1854 the Liverpool Photographic Society recognising the importance of this subject, and the interest felt it in the British Association at the last meeting requested MR J A Forrest its secretary and My J Hartnup of the :Liverpool Observatory and himself , to act as a committee for obtaining photographs of the Moon by the Liverpool telescope, and to lay them before the present meeting.
The committee had produced a large number of pictures with variable success and some of the most perfect copies were now presented. The telescope is furnished with an excellent equatorial mounting and clock work motion of great firmness and steadiness. The object glass has a focal length of about 12.5 feet and a small camera box being substituted for the eye piece, the image is received upon the ground glass or prepared plate in the ordinary manner.
At the Liverpool Astronomical Society last month a paper was read on Celestial Photography:-At a joint meeting of the Literary and Philosophical and Astronomical Societies of Liverpool, Mr. Herbert Sadler,.FRAS read a paper on Celestial Photography, in which he referred to-the great advances which had lately been latterly been made in astronomy by the assistance of photography. Starting from the first crude and imperfect pictures of the sun and moon, astronomy and photography had marched hand in hand until the by present methods of manipulation enabled us to photograph objects which the eye can never hope to see.
The paper was profusely illustrated by celestial photographs; and in calling attention to go a picture of Capella Mr, Sadler explained that the rays which affected the plate started on their errand during the battle of Waterloo. As an illustration of the far-reaching power of the photographic eye, the map of the Pleiades constructed by M. Wolf contained 671 stars, and after a careful sounding in this direction with the largest telescope in the Paris Observatory, the author felt assured that all beyond was darkness, and that he had absolutely reached the utmost depths of space. But a photograph of the same district taken by the Brothers Henry, with a much smaller telescope, in one hour showed 1421 stars against the 671 which bad taken M Wolf three years to Map.
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