William Christie, Astronomer Royal
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Half-inch prism for spectroscope of 28 Inch arrived from Troughton & Simms.
Frank Dyson, Chief Assistant
Joining the 2009 International Year of Astronomy's Cosmic Diary project, this blog transcribes 19th-century working journals kept by the Astronomer Royal and Chief Assistant of the Royal Observatory in Greenwich. Transcription and comments are provided by a 21st-century curator working on the same site.
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