First Photograph of the Nebula in Orion, taken by Professor Henry Draper, M.D. ; September 30th, 1880, exposure 51 minutes (titre original)

inconnu, “First Photograph of the Nebula in Orion, taken by Professor Henry Draper, M.D. ; September 30th, 1880, exposure 51 minutes (titre original),” Bibliothèque numérique - Observatoire de Paris, consulté le 3 mai 2024, https://bibnum.obspm.fr/ark:/11287/37TFL.