What is NGC catalogue?

You might have often seen names of nebulae, galaxies staring with prefix "NGC" such as "NGC xxxx".

 NGC refers to "New General Catalogue" for deep sky objects including including galaxies, star clusters, emission nebulae and absorption nebulae. 

 The list has 7,840 objects, below is exhaustive list of objects https://en.wikipedia.org/wiki/List_of_NGC_objects

 The Revised New General Catalogue and Index Catalogue (abbreviated as RNGC/IC) is a compilation made by Wolfgang Steinicke in 2009. It is a comprehensive and authoritative treatment of the NGC and IC catalogues. 

 Note - information is from below wiki link 
https://en.wikipedia.org/wiki/New_General_Catalogue

Below is translation of above text in Portuguese by Elaine (Teacher from Brazil,In São Paulo)


O que é o catálogo NGC?

Você deve ter visto frequentemente nomes de nebulosas, galáxias com o prefixo "NGC", como "NGC xxxx".
 NGC refere-se ao "Novo Catálogo Geral" para objetos do céu profundo, incluindo galáxias, aglomerados de estrelas, nebulosas de emissão e nebulosas de absorção.
 A lista tem 7.840 objetos, e abaixo está uma lista exaustiva; https://en.wikipedia.org/wiki/List_of_NGC_objects

 O Novo Catálogo Geral Revisado e Catálogo de Índice (abreviado como RNGC / IC) é uma compilação feita por Wolfgang Steinicke em 2009. É um tratamento abrangente e confiável dos catálogos NGC e IC.

 Nota - as informações estão no link wiki abaixo https://en.wikipedia.org/wiki/New_General_Catalogue

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