Abstract
SOLAR ECLIPSE PHOTOGRAPHY.—Mr. Albert Taylor recently read a paper before the Royal Dublin Society, on the selection of suitable instruments for photographing the solar corona during total solar eclipses. The photographs obtained by other observers and himself during the total eclipse of April 1893, have indicated the best methods, both photographic and instrumental, to be adopted for the next observable total solar eclipse, on August 8, 1896. One of the most disputed points in eclipse photography, says Mr. Taylor, refers to the proper exposure required to obtain the faint extensions of the corona without fogging the plate by the sunlight. Two opposite opinions are held as to the best method of photographing these diaphanous coronal extensions. Short exposures and slight photographic action are believed by some observers to give the best results, but others hold that long exposures and great photographic action are necessary to attain the desired end. An examination of the photographs obtained during the eclipse of April 1893, shows that the latter view must be abandoned; and that nothing is to be gained by using photographic actions exceeding 15 or 16.
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Our Astronomical Column. Nature 50, 433 (1894). https://doi.org/10.1038/050433a0
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DOI: https://doi.org/10.1038/050433a0