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Paper detail

Betelgeuse at the end of 2019: an historical minimum about to end

The semi-regular variable star Betelgeuse is undergoing an historical minimum of its brightness. An 8 year series of visual and V-band CCD observations started at the end of 2011 is presented and discussed. Visual methods for comparing magnitudes of angularly distant stars, and performing a differential photometry, needed for such a bright star, are also presented.

preprint2020arXivOpen access
Costantino Sigismondi
astro-ph.SR
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Open access1 author1 topic
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Costantino Sigismondi

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