The Indexed Catalogue (IC) is an extension of the NGC catalogue.
The Barnard Catalogue (B) covers dark nebulae.
The King Catalogue contains 27 open clusters described by Ivan R. King between 1949 and 1966.
IC 434 is a faint emission nebula which is obscured by B33.
B33 is the Horsehead Nebula.
King 14 is a little-known
open cluster in Cassiopeia.
IC 5070, the Pelican Nebula,
is a faint emission nebula just
to the west of NGC 7000.
IC 1396 is a faint emission nebula in Cepheus
IC 5146 is an emission and reflection nebula in Cygnus
IC 410, the Tadpole Nebula,
is a faint emission nebula in Auriga.
The Hyades, our closest open cluster, is in Taurus.
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