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Articles with the IC number in the title use [[Category:IC objects|####]], dropping the IC prefix, and using only the number. The number should be padded up to 4 digits using zeroes. Articles without the IC number in the title use [[Category:IC objects]]. A redirect containing the IC number should also be added to the category, sorted as above.
This is a partial list of IC objects, which are astronomical objects included in the Index Catalogue of Nebulae and Clusters of Stars. This two volume catalog was published in 1895 and 1908 by J. E. L. Dreyer. The constellation information for this table is available from the NGC2000.0: Complete New General Catalog and Index Catalog. [1]
The NGC contains 7,840 objects, including galaxies, star clusters and emission nebulae. Dreyer published two supplements to the NGC in 1895 and 1908, known as the Index Catalogues (abbreviated IC), describing a further 5,386 astronomical objects. Thousands of these objects are best known by their NGC or IC numbers, which remain in widespread use.
[3] Hitachi HA12043: Yes CX noise reduction system for phonograph records in the 1980s. Hitachi HA12044: Yes CX noise reduction system for phonograph records in the 1980s. MK484: Fully functional AM radio detector on a chip. Constructed in a TO-92 case. [4] [5] NE612: Oscillator and a mixer. Used in ham radio applications. [6] Operational amplifier
An astronomical catalogue is a list or tabulation of astronomical objects, typically grouped together because they share a common type, morphology, origin, means of detection, or method of discovery. Astronomical catalogs are usually the result of an astronomical survey of some kind.
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