Sunspot 1809 seen in hydrogen-alpha light,August 4,2013. Photographed with a DMK21 AF04 firewire camera & Lunt 60mm/50HA solar telescope,723 frames,1/77 sec exposure | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Chumack, John |
Taille de l’image : | 2700 px × 2027 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : |
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