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micrometre à fil...recherche d'infos

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bonjour à tous...

Je recherche tout plans,schémas,trucs et astuces,liens vers des sites web permettant la fabrication et l'utilisation d'un micromètre à fil (instrument servant à mesurer l'écart entre les deux composantes d'une étoile double).
Votre aide me sera précieuse,merci d'avance.

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Planetary Astronomy
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.
More information on

"Lunettes et telescopes" de Danjon et Couderc.

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