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Photographs of Stars, Star-Clusters and Nebulae - Together with Records of Results Obtained in the Pursuit of Celestial Photography (Paperback)
Loot Price: R1,334
Discovery Miles 13 340
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Photographs of Stars, Star-Clusters and Nebulae - Together with Records of Results Obtained in the Pursuit of Celestial Photography (Paperback)
Series: Cambridge Library Collection - Astronomy, Volume 2
Expected to ship within 12 - 17 working days
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A geologist and fellow of the Royal Astronomical Society, Isaac
Roberts (1829-1904) made significant contributions to the
photography of star-clusters and nebulae. By championing reflecting
rather than refracting telescopes, Roberts was able to perceive
previously unnoticed star-clusters, and was the first person to
identify the spiral shape of the Great Andromeda Nebula. Roberts'
use of a telescope for photographing stars, and a long exposure
time, provided greater definition of stellar phenomena than
previously used hand-drawings. Although Roberts' conclusions about
the nature of the nebulae he photographed were not always correct,
the book is significant for the possibilities it suggests for
nebular photography. Published in 1893 and 1899, the two-volume
Photographs of Stars represents the summation of his work with his
assistant W. S. Franks at his observatory in Crowborough, Sussex.
Volume 2 contains 29 plates of stars, and his conclusions about
their origins and nature.
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