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Catalogue of Nebulae and Clusters of Stars
The
Catalogue of Nebulae and Clusters of Stars
(
CN
) is an
astronomical catalogue
of
nebulae
first published in 1786 by
William Herschel
, with the assistance of his sister
Caroline Herschel
. It was later expanded into the
General Catalogue of Nebulae and Clusters of Stars
(
GC
) by his son,
John Herschel
. The CN and GC are the precursors to
John Louis Emil Dreyer
's
New General Catalogue
used by current astronomers.
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