Abstract
THE LUNAR ECLIPSE OF LAST AUGUST.-C.R. Acad. Sci. of Jan. 19 contains a research on the brightness of the moon at this eclipse, made by J. Dufay and A. Conder at St. Geniez (height 3500 ft.) in a clear sky. They used the Dufay photometer, which gives results that are independent of the diameter of the body measured. The moon was compared with Mars and Jupiter, the magnitudes of which were taken as -2-6 and ˜i-8. In the following table D is the distance in minutes of the moon's centre from the centre of the shadow, V its visual and P its photographic magnitude, C the colour-index.
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Our Astronomical Column. Nature 115, 277 (1925). https://doi.org/10.1038/115277b0
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DOI: https://doi.org/10.1038/115277b0