RCW Catalogue
The RCW - catalog ( Rodgers, Campbell, Whiteoak ) is an astronomical catalog of 182 areas in the southwestern Milky Way, show the Hα emission, described in "A catalog of Hα emission regions in the southern Milky Way ."
The catalog was compiled in the 1960s by Alexander William Rodgers, Colin T. Campbell and John Bartlett Whiteoak at Mount Stromlo Observatory in Australia.
Examples
Some of the RCW catalog objects; Clicking on the picture will download the image description, the majority are either of different amateur astronomers of the European Southern Observatory, ESA or NASA
PK 349 01 1, Butterfly Nebula, RCW 124, Gum 60, Caldwell 69