Catalog NGC (New General Catalogue) includes 7840 galaxies, nebulae and other objects.
NGC original catalog was compiled by John Ludwig Emil Dreyer (Johan Ludvig Emil Dreyer) in 1880, based largely on observations by William Herschel.
His subsequent expansion, the index directories IC I and IC II, 5326 contain more objects.
Now the index directories IC together with the main NGC catalog are usually considered a single directory,
but the IC prefix in the names of objects of course saved.
Catalog NGC includes both Messier bright objects which are visible even on a bright sky,
such as M31 and M13, and very dull and "small" items.
The NGC catalog includes not only vague objects like galaxies, nebulae and their parts, but the ball and open clusters of stars, as well as closely spaced stars (2x, 3x and other asterism).
In short, in this catalog amateur astronomer find items for every taste and observation capabilities.
Here we have used the refined modern version of this catalog - RNGC with Dr. Site Wolfgang Steinicke, contains 13958 entries.
On the light-polluted skies near the cities of many objects NGC and IC catalogs merge with a bright sky background.
In addition, the small telescopes are simply not enough zoom and aperture for observing with the naked eye, most of the objects NGC catalog.
In such conditions it is better to use the
"Messier catalog" and "Caldwell catalog", in which selected the brightest and "largest" objects in our sky.
NGC original catalog was compiled by John Ludwig Emil Dreyer (Johan Ludvig Emil Dreyer) in 1880, based largely on observations by William Herschel.
His subsequent expansion, the index directories IC I and IC II, 5326 contain more objects.
Now the index directories IC together with the main NGC catalog are usually considered a single directory,
but the IC prefix in the names of objects of course saved.