Abstract
The Sky in September. There is only one planet conveniently situated for observation this month, and that is Saturn, which is a conspicuous object rather far south in the heavens. Apart from its southerly declination, it is well placed for observation this month as it crosses the meridian about an hour before midnight. Saturn is an object of great beauty on account of its singular rings, which can easily be seen with a small telescope: it has become of particular interest at the present time by developing a large white spot, which can easily be seen with a modest telescope. The spot rotates with the planet and accordingly becomes alternately visible and invisible, the period of rotation being about ten hours. It is not known how long the spot will persist, but it may remain for a matter of a few weeks.
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Astronomical Topics. Nature 132, 357 (1933). https://doi.org/10.1038/132357a0
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DOI: https://doi.org/10.1038/132357a0