Morphological Catalogue of Galaxies
Encyclopedia
The Morphological Catalogue of Galaxies (MCG) or Morfologiceskij Katalog Galaktik, is a Russian catalogue of 30642 galaxies compiled by Boris Vorontsov-Velyaminov
and V. P. Arkhipova. It is based on a close scrutiny of prints of the Palomar Sky Survey plates, and putatively complete to a photographic magnitude
of 15. Including galaxies to magnitude 16 would have resulted in an unmanageably large dataset.
Boris Vorontsov-Velyaminov
Boris Aleksandrovich Vorontsov-Velyaminov was a Soviet/Russian astrophysicist. His name is sometimes given as Vorontsov-Vel'yaminov....
and V. P. Arkhipova. It is based on a close scrutiny of prints of the Palomar Sky Survey plates, and putatively complete to a photographic magnitude
Photographic magnitude
Before the advent of photometers which accurately measure the brightness of astronomical objects, the apparent magnitude of an object was obtained by taking a picture of it with a camera. These images, made on photoemulsive film or plates, were more sensitive to the blue end of the visual spectrum...
of 15. Including galaxies to magnitude 16 would have resulted in an unmanageably large dataset.