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Birth
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Marries
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Has a son
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Get a job
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Period: to
collaborates in the photographic analysis of stellar spectra
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discovered the Horsehead Nebula
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does a work (Draper Catalogue of Stellar Spectra)
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received a degree as Curator of the Archive of Astronomical Photographs at Harvard
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Get the honorary award from Wellesley College.
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achieved an honorary position in the Royal Astronomical Society of London
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Does a work (A Photographic Study of Variable Stars)
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published a list containing 222 stars
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spectrally studied the first low-mass star remnant
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Does a work (Spectra and Photographic Magnitudes of Stars in Standard Regions)
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Death