Abstract
THE LATE SOLAR ECLIPSE AT WATSON'S STATION.— Prof. Watson made such excellent use of the brief period of totality in the eclipse of July 29, that it will not be without interest to record the circumstances under which he observed. In a communication to M. Mouchez he gives for his position at Separation, Wyoming Territory, latitude 41° 45′ 50″, longitude 2h. 1m. 36s. west of Washington, corresponding to 7h. 9m. 48.1s., west longitude from Greenwich. Prof. Newcomb's corrections to Hansen's place of the moon at this time are - o.63s. in right ascension, and + 3.3″in declination; whence if we take 10h. 24m. Greenwich M.T. for a special calculation, we have for the position of the moon, R.A. 8h. 38m. 11.9s., decl. + 19° 5′ 59′3″. Combining this with the sun's place from Leverrier's Tables and the Nautical Almanac semi-diameters, there results Beginningof total eclipse, July 29...3h. 13m. 32.5) Mean times Ending … … … …3h. 16m. 24.0 at Separation.
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Our Astronomical Column . Nature 19, 14–15 (1878). https://doi.org/10.1038/019014a0
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DOI: https://doi.org/10.1038/019014a0