Convertible telescopes
From time to time, one comes across the idea of a telescope that has more than one optical configuration. This
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Archives
Betelgeuse’s 2021 April minimum agrees with prediction of 430-day period
Interest in Betelgeuse remains high. No fewer than 6,089 visual estimates of the star have been submitted to the American
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Nominations invited for the eighth Sir Patrick Moore Prize
The annual Sir Patrick Moore Prize of £500 plus a year’s membership of the BAA may be awarded to any
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