A planisphere,which is a circular star chart instrument with two adjustable rotating disks. It can be adjusted so that it displays the visible stars for any time and date. In this photograph (11 of 12),it is set to May,showing the sky at a latitude of 40 degrees north | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Science Source |
Taille de l’image : | 5184 px × 3456 px |
Model Release : | Non requis |
Restrictions : |
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