By Stephen James O'Meara
The Herschel four hundred is a listing of four hundred galaxies, nebulae, and famous person clusters, picked from over 2,500 deep-sky gadgets came across and catalogued by means of the nice eighteenth-century astronomer Sir William Herschel and his sister Caroline. It includes 231 galaxies, 107 open clusters, 33 globular clusters, 20 planetary nebulae, 2 halves of a unmarried planetary nebula, and seven brilliant nebulae. during this advisor Steve O'Meara takes the observer throughout the record, season through season, month via month, evening by way of evening, item by means of item. He works throughout the items in a delicately deliberate and methodical means, taking in the most dramatic non-Messier galaxies, nebulae, and famous person clusters within the evening sky. excellent for astronomers who've tackled the Messier items, this richly illustrated consultant can help the beginner astronomer hone their watching talents.
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