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Autor(en): 
  • Edward James Stone
  • The Cape Catalogue of 1159 Stars: Deduced From Observations at the Royal Observatory, Cape of Good Hope, 1856 to 1861, Reduced to the Epoch 1860 (Clas 
     

    (Buch)
    Dieser Artikel gilt, aufgrund seiner Grösse, beim Versand als 2 Artikel!


    Übersicht
     
    Lieferstatus:   i.d.R. innert 5-10 Tagen versandfertig
    Genre:  Naturwissensch., Medizin, Technik 
    ISBN:  9780331816143 
    EAN-Code: 
    9780331816143 
    Verlag:  Forgotten Books 
    Einband:  Kartoniert  
    Sprache:  English  
    Dimensionen:  H 229 mm / B 152 mm / D 5 mm 
    Gewicht:  137 gr 
    Seiten:  92 
    Zus. Info:  23:B&W 6 x 9 in or 229 x 152 mm Perfect Bound on White w/Gloss Lam 
    Bewertung: Titel bewerten / Meinung schreiben
    Inhalt:
    Excerpt from The Cape Catalogue of 1159 Stars: Deduced From Observations at the Royal Observatory, Cape of Good Hope, 1856 to 1861, Reduced to the Epoch 1860

    The Right Ascensions of those Stars which have been used for clock error can do little more than reproduce the assumed tabular places em ployed in the reductions, and the Right Ascensions of other Stars not further from the Equator than those of the usual clock-star list can never differ much from the results of the Northern Observatories.

    The North Polar Distances of the same well-observed Stars can now be of little value. The results are not likely to be compared with those of the Northern Observatories for a discussion of the errors of the refraction tables when results made with more powerful instruments are available.

    I have made these remarks, not only in justice to the present staff, and to explain the work upon which they have been employed, but because it was these considerations which led me to pass over the earlier observations, and to commence the systematic reductions with the year 1856, when the Transit Circle was first brought into regular use. I felt that these reductions could not be any longer delayed without the value of the results being greatly diminished. I had, and still have, hopes, that the data collected in the present Catalogue for corresponding observations at the Northern Observatories would be found su¿icient to meet the actual requirements of Astronomers, so far as these requirements can be met by the material collected here, and that I might be relieved from the laborious and somewhat useless task of completing the reductions of the earlier Observations of Stars whose positions have been fixed already with an accuracy greater than could be expected to be attained in the observations made with the, comparatively speaking, inferior instruments in use at this Observatory before the introduction of the Transit Circle.

    About the Publisher

    Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com

    This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.

      
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