A catalogue of non-stellar objects compiled by the Dane, J. Dreyer in 1888. He released additions known as Index Catalogues (ICs). The final version containing these supplements and a total of 13226 objects was released in 1908. It is technically called the NGC-IC catalogue but is universally known as the NGC. The catalogue contains nebulae, clusters, and galaxies. There is necessarily an overlap with the contents of the Messier Catalogue. The objects are identified by numbers, prefixed by NGC. For example NGC224 is the Andromeda Nebula.