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2010 séance 1 a la découverte du ciel

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Première séance de l'enseignement expérimental d'Astro-philo au lycée Chaplin Becquerel à Décines.

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2010 séance 1 a la découverte du ciel

  1. 1. A la découverte du Ciel!<br />
  2. 2. Le ciel diurne<br />Le Soleil<br />Attention, on ne peut pas regarder directement le Soleil, il faut toujours se protéger avec un filtre adapté.<br />A la découverte du Ciel!<br />Crédits Astrosurf.fr<br />
  3. 3. A la découverte du Ciel!<br />Le ciel diurne<br />Le Soleil<br />-l’ observation de son ombre permet de déterminer sa position dans le ciel.<br />Photo: P Jeanjacquot<br />
  4. 4. A la découverte du Ciel!<br />Le ciel diurne<br />Le Soleil<br />Photos: P Jeanjacquot<br />
  5. 5. A la découverte du Ciel!<br />Le ciel diurne<br />Le Soleil<br />-L’observation par projection nous permet d’observer et d’étudier les taches Solaires.<br />De les compter de mesurer leur déplacement relatif et d’en déduire la vitesse de rotation du Soleil<br />Crédits Solarscope<br />
  6. 6. A la découverte du Ciel!<br />Le ciel diurne<br />Le Soleil<br />-L’observation avec des filtres sélectifs nous permet de voir la surface du Soleil à différents altitudes de bien visualiser les protubérances et les cellules à la surface du Soleil. <br />
  7. 7. A la découverte du Ciel!<br />Le ciel diurne<br />Le Soleil<br />L’observation se fait aussi de l’espace, un grand nombre de satellites surveillent le Soleil.<br />
  8. 8. A la découverte du Ciel!<br />Le ciel diurne<br />Le Soleil<br />
  9. 9. A la découverte du Ciel!<br />Le ciel diurne<br />Le Soleil<br />
  10. 10. A la découverte du Ciel!<br />Le ciel diurne<br />La Lune<br />Crédits Gérard Thérin<br />
  11. 11. A la découverte du Ciel!<br />Le ciel diurne<br />Le Ciel bleu<br />Cette couleur est due à la diffusion de Rayleigh. Les molécules qui constituent la haute atmosphère diffusent la couleur bleue de la lumière.<br />
  12. 12. A la découverte du Ciel!<br />Le ciel diurne<br />Le Ciel bleu<br />Cette couleur est due à la diffusion de Rayleigh. Les molécules qui constituent la haute atmosphère diffusent la couleur bleue de la lumière.<br />
  13. 13. A la découverte du Ciel!<br />Le ciel nocturne<br />Les étoiles<br />Albirédo : étoile double<br />Photos: P Jeanjacquot- option astro-philo<br />Les couleurs des étoiles (spectres) nous renseignent sur leur nature (température, composition)<br />Etoiles dans la constellation du Cygne<br />
  14. 14. A la découverte du Ciel!<br />Le ciel nocturne<br />La Lune<br />L’observation peu porter sur la surface de la Lune (cratères et formations géologiques) ou les phases de la Lune .<br />Photos: P Jeanjacquot<br />
  15. 15. A la découverte du Ciel!<br />Le ciel nocturne<br />Les planètes<br />Les planètes se situent sur un plan appelé plan de l’écliptique. Elles sont facilement repérable dans le ciel car elles se situent plutôt côté sud sur une courbe (projection du plan de l’écliptique). <br />
  16. 16. A la découverte du Ciel!<br />Le ciel nocturne<br />Les planètes<br />Les planètes se situent sur un plan appelé plan de l’écliptique. Elles sont facilement repérable dans le ciel car elles se situent plutôt côté sud sur une courbe (projection du plan de l’écliptique). <br />Crédits: l’astronomie Magazine sept 2009<br />
  17. 17. A la découverte du Ciel!<br />Le ciel nocturne<br />Les planètes<br />Il est relativement facile de réaliser des images des planètes avec un télescope et une webcam<br />Photos: P Jeanjacquot- option astro-philo<br />
  18. 18. A la découverte du Ciel!<br />Le ciel nocturne<br />La Voie Lactée<br />Mauna Kea Milky Way Panorama Credit & Copyright: Wally Pacholka (TWAN) <br />Photo : Max/Flickr - Licence Creative Commons<br />
  19. 19. A la découverte du Ciel!<br />Le ciel nocturne<br />Autres Galaxies<br />M31 Andromède (à voir sur Google Earth et Stellarium) source Hubble Space Telescope.<br />
  20. 20. A la découverte du Ciel!<br />Le ciel nocturne<br />Autres Galaxies<br />Avec le télescope C8 du lycée<br />Avec le Faulkes télescope à Hawai<br />Photos: P Jeanjacquot- option astro-philo<br />M51 la Galaxie du tourbillon<br />
  21. 21. A la découverte du Ciel!<br />Le ciel nocturne<br />Evolution des étoiles<br />M57 la nébuleuse de la Lyre est ce qui reste d’une étoile qui a explosé en fin de vie.<br />M42 la nébuleuse ,d’Orion est une « pouponnière d’étoiles<br />Photos: P Jeanjacquot option astro-philo<br />
  22. 22. A la découverte du Ciel!<br />Le ciel nocturne<br />Amas d’étoiles<br />Le double amas de Persée est un amas ouvert.<br />M 13 l’amas d’ Hercule est un amas globulaire<br />Photos: P Jeanjacquot- option astro-philo<br />
  23. 23. A la découverte du Ciel!<br />Le ciel nocturne<br />Les comètes<br />La comète Holmes<br />Photos: P Jeanjacquot- option astro-philo<br />
  24. 24. A la découverte du Ciel!<br />Le ciel nocturne<br />Les météorites<br />APOD: Meteors Between Stars and Clouds Credit & Copyright: Pierre Martin & Michael F. Vasseur<br />
  25. 25. A la découverte du Ciel!<br />Le ciel nocturne<br />Les satellites artificiels<br />Crédit : M. Weigand/Ciel et Espace Photos<br />
  26. 26. A la découverte du Ciel!<br />Comment trouver les objets dans le ciel?<br />La Terre tourne!!!<br />Star Trails Over Oregon Credit & Copyright: Joshua Bury<br />
  27. 27. A la découverte du Ciel!<br />Comment trouver les objets dans le ciel?<br />L’astrolabe<br />Photos: P Jeanjacquot- option astro-philo<br />
  28. 28. A la découverte du Ciel!<br />Comment trouver les objets dans le ciel?<br />Le Cherche étoile.<br />
  29. 29. A la découverte du Ciel!<br />Comment trouver les objets dans le ciel?<br />Les logiciels<br />
  30. 30. A la découverte du Ciel!<br />Comment trouver les objets dans le ciel?<br />Se repérer par rapport aux constellations.<br />Crédits: l’astronomie Magazine sept 2009<br />
  31. 31. A la découverte du Ciel!<br />Comment trouver les objets dans le ciel?<br />Utiliser les coordonnées…<br />Crédits: Denis Savoy, la Cosmographie<br />
  32. 32. A la découverte du Ciel!<br />Comment trouver les objets dans le ciel?<br />Utiliser les coordonnées…<br />Crédits: Denis Savoy, la Cosmographie<br />
  33. 33. A la découverte du Ciel!<br />Comment observer?<br />Soit même à l’œil nu ou avec un instrument.<br />Crédits: Sky Watcher, Meade, Celestron<br />
  34. 34. A la découverte du Ciel!<br />Comment observer?<br />Utiliser des bases de données.<br />http://cdsweb.u-strasbg.fr/<br />http://www.us-vo.org/http://archive.eso.org/eso/eso_archive_main.html<br />
  35. 35. A la découverte du Ciel!<br />Comment observer?<br />Piloter des télescopes à distance.<br />http://faulkes-telescope.com/<br />
  36. 36. A la découverte du Ciel!<br />Comment observer?<br />Traiter les images<br />M57<br />Traitement avec un logiciel (Iris, imageJ, registax…)<br />Nébuleuse de l’œil de chat NGC6543<br />Photos: P Jeanjacquot- option astro-philo<br />
  37. 37. A la découverte du Ciel!<br />Le ciel ne s’observe pas qu’en lumière visible….<br />

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