NGC 1999 is a dust-filled bright nebula with a vast hole of empty space represented by a black patch of sky, as can be seen in the photograph.
NGC 869 is an open cluster located 7600 light years away in the constellation of Perseus.
The Crab Nebula, M1 or NGC 1952 is a supernova remnant and pulsar wind nebula in the constellation of Taurus.
NGC 4501 is a spiral galaxy of type Sb.
NGC 2264 is the designation number of the New General Catalogue that identifies two astronomical objects as a single object:
- the Cone Nebula,
- the Christmas Tree Cluster,
All of the objects are located in the Monoceros constellation.