By Stephen James O'Meara
The Herschel four hundred is a listing of four hundred galaxies, nebulae, and superstar clusters, picked from over 2,500 deep-sky items chanced on and catalogued through the good 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 during the record, season by means of season, month by way of month, evening via evening, item by way of item. He works in the course of the items in a delicately deliberate and methodical means, taking in one of the most dramatic non-Messier galaxies, nebulae, and celebrity clusters within the evening sky. excellent for astronomers who've tackled the Messier gadgets, this richly illustrated consultant can help the novice astronomer hone their watching talents.
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