Astronomical Topics

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    Eclipse of the Moon of Sept. 26, 1931.—L'Astronomie for November contains a series of photographs of the partially eclipsed moon, also diagrams by M. Ananoff showing the distribution of colours on the lunar disc during the total phase. The most interesting point is that there was a region described as “Bleu-verdatre” throughout totality, though it changed its position on the disc. Blue is not very often seen on the moon (witness the phrase ‘once in a blue moon’), but the writer of this note recorded that part of the disc was of a decided blue colour in the eclipse of Oct. 17, 1902: dawn ensued shortly after this, and it was of a pure blue colour, without any admixture of red; this probably had some connexion with the blue on the moon. A note, with a diagram, was published in Observatory for November 1902.

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    Astronomical Topics. Nature 129, 136 (1932) doi:10.1038/129136a0

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