Abstract
ANYONE who observes with a large telescope soon becomes aware of the great obstacle atmospheric undulation offers to the pursuit of astronomy, particularly in the application of photography and the spectroscope. During two years when I photographed the moon on every moonlight night at my observatory,3 there were only three occasions on which the air was still enough to give good results, and even then there was unsteadiness. Out of 1,500 lunar negatives, only one or two were really fine pictures. A letter which the late Mr. Bond wrote to me states that in seventeen years he bad never met with a perfectly faultless night at the Cambridge Observatory.
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The Atmosphere of the Rocky Mountains 2 . Nature 15, 354–356 (1877). https://doi.org/10.1038/015354c0
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DOI: https://doi.org/10.1038/015354c0