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Washing mirrors
Dust accumulates over time on mirrors´ surfaces, absorbing and diffusing some of the light that should be focused on the instruments, so periodical cleaning is needed.
Crédit:ESO
À propos de l'image
| Identification: | faut-pas-rever021 |
| Type: | Photographique |
| Date de publication: | 26 avril 2013 15:56 |
| Taille: | 2304 x 3072 px |
