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La pleine Lune à l'hélioscope ...

By ndesprez, May 4 in Visual observation

Les Rencontres des Observateurs Solaires, les ROS

By ndesprez, January 10 in Meetings-Events

Travail de la tôle

By ndesprez, March 21 in Practical astronomy

géologie lunaire

By ndesprez, January 30 in General Astronomy

Diélectrique ?

By ndesprez, December 2, 2021 in Practical astronomy

Visserie anglaise

By ndesprez, October 12, 2021 in Practical astronomy

Réducteur harmonique

By ndesprez, October 6, 2021 in Practical astronomy

altitude sur Terre

By ndesprez, September 29, 2021 in General Astronomy

lunette Vixen 70/900 ?

By ndesprez, August 20, 2021 in Practical astronomy

une niut des étoiles sous la Lune

By ndesprez, July 17, 2021 in Practical astronomy

Composition géologique lunaire

By ndesprez, June 4, 2021 in General Astronomy

Un réfracteur français ?

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By ndesprez, June 7, 2018 in Practical astronomy

spécialistes de la Lune

By ndesprez, April 16, 2021 in Practical astronomy

Une journée sélène ?

By ndesprez, April 2, 2021 in Practical astronomy

Lunar Aeronautical Charte Series

By ndesprez, March 27, 2021 in Practical astronomy

Le devenir des ROS

By ndesprez, September 17, 2019 in Meetings-Events

Appel aux Sélénistes

By ndesprez, February 28, 2021 in General Astronomy

Lamont et la couleur des basaltes ...

By ndesprez, February 18, 2021 in General Astronomy

températures lunaires

By ndesprez, February 11, 2021 in General Astronomy

Etoile artificielle

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By ndesprez, April 8, 2020 in Practical astronomy

chercheur droit redressé

By ndesprez, January 20, 2021 in Practical astronomy

librations

By ndesprez, January 4, 2021 in Practical astronomy

Lascaux, approche astronomique

By ndesprez, January 7, 2021 in Practical astronomy

Manuel d'observation lunaire, 2ème édition

By ndesprez, December 16, 2020 in Practical astronomy

Vous dites ED ?

By ndesprez, November 26, 2020 in Practical astronomy