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soleil rouge

Flare et grande protubérance 30 novembre 2022

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Grande protubérance et et flare solaire 30 novembre 2022

lunette 150 mm halpha en double étalon PST et camera apollo IMX 429



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Observing, imaging and studying the planets
A comprehensive book about observing, imaging, and studying planets. It has been written by seven authors, all being skillful amateur observers in their respective domains.
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