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cbuil

Retour activité le 20 septembre

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Après une semaine de relative accalmie, quelques taches qui reviennent sur le disque. Un extrait de l'image H-apha le 20 septembre, avec Sol'Ex sur une lunette AstroPhysics de 120 mm :

 

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Détail H-alpha :

 

__12_33_04_detail.jpg.baef15c9ca6acf38c1727c1fb0ae57bf.jpg

 

Le même scan Sol'Ex en sortant de la raie H-alpha pour visualiser le groupe de tache (photosphère) :

 

__12_33_04_tache.jpg.81a12bfec53e15355d7cc9971c719b4f.jpg

 

Christian B

 

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Planetary Astronomy
Observing, imaging and studying the planets
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