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British Astronomical Association

British Astronomical Association

Supporting amateur astronomers since 1890

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Archives

From the BAA bookshelf

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Letters

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FROM THE JOURNAL ARCHIVE

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Demystifying calibration frames

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Prof Roger Griffin (1935–2021)

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Lilian_Martin-Leake

Three Girton astronomers

Girton College, located on Girton Road running north-west out of Cambridge, was founded in 1869 by Emily Davies and Barbara

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Pro-am collaboration on a modern reconstruction of Carrington’s sunspot observations

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Solar Section

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PIA23882-MarsHelicopterIngenuity-20200429_(trsp)

The first Martian helicopter flights & Kitty Hawk

At the start of the twentieth century, the concept of flying machines was hardly a new idea. Balloon ascents were

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Nicola

Auroral & noctilucent cloud activity 2021 February 20 – April 20

With no coronal mass ejections and sunspot numbers just in double figures or at zero, there are 17 aurora sightings

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