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Photographs of Stars, Star-Clusters and Nebulae

Photographs of Stars, Star-Clusters and Nebulae
2 Volume Paperback Set


Part of Cambridge Library Collection - Astronomy

  • Date Published: October 2010
  • availability: Available
  • format: Multiple copy pack
  • isbn: 9781108015240

$ 67.00
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About the Authors
  • 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 telescopes for photographing stars 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, and sometimes misinterpreted by others, the book is significant for the possibilities it suggests for nebular photography. Published in 1893 and 1899, these volumes represent the summation of his work with his assistant W. S. Franks at his observatory in Crowborough, Sussex. Lavishly illustrated, the books contain descriptions of instruments and methodology, and Roberts' theory of the stars' origins and nature.

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    Product details

    • Date Published: October 2010
    • format: Multiple copy pack
    • isbn: 9781108015240
    • dimensions: 297 x 210 x 20 mm
    • weight: 0.95kg
    • availability: Available
  • Table of Contents

    Volume 1: Preface
    Isaac Roberts' observatory, Crowborough Hill
    Isaac Roberts' telescopes
    List of the plates
    List of the abbreviations
    1. The negatives
    2. Arrangement of the photographs
    3. Epoch of the Fiducial stars (A.D. 1900)
    4. A table for converting measurements in right ascensions into intervals of time
    5. Illustrations of the method for determining the right ascensions and declinations of the stars
    6. Introduction
    Utility of the photographic charts
    7. Refractors and reflectors as photo-instruments
    8. Requirements and adjustments of a reflector for celestial photography
    9. Collimation of the mirror
    10. Essentials of a photo-telescope
    11. Method for testing the stability of a photo-instrument
    12. Photographic plates: their exposures and development
    13. Description of the photographs and references concerning them
    14. Deductions from the photographs. Volume 2: Preface
    List of the plates
    List of abbreviations adopted in this work
    1. The negatives
    2. Epoch of the Fiducial stars, A.D. 1900
    3. Table for converting the measured right ascensions
    4. Deterioration of the negatives
    5. Effects of atmospheric glare and of diffraction upon the films of photographic plates
    6. Arrangement of the plates
    7. Method for micro-puncturing the photographic discs of stars on plates
    8. Star catalogues and photographic charts
    9. Duration of the effective exposures given to photographic plates in the 20-inch reflector
    10. Are the millions of stars and the numerous nebulosities limited in number and extent
    11. The evolution of stellar systems
    12. Inferences suggested by examination of the photographs
    13. Description of the photographs
    14. M.31. Andromedae
    15. M.99 Virginis
    16. M.51 Canum Venaticorum
    17. Region of 7 Cassiopeiae
    18. Nebulae in the Pleiades
    19. M.42. Orionis
    20. General conclusions concerning the evolution of stellar systems.

  • Author

    Isaac Roberts

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