Photograph of the Nebula in Orion, taken by Professor Henry Draper, M.D., March 11th, 1881. Exposure 104 minutes. (titre original)

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inconnu, “Photograph of the Nebula in Orion, taken by Professor Henry Draper, M.D., March 11th, 1881. Exposure 104 minutes. (titre original),” Bibliothèque numérique - Observatoire de Paris, consulté le 26 décembre 2024, https://bibnum.obspm.fr/ark:/11287/1tgXM.