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Catalogue and alternative designations NGC 3199

 

Type Emission Nebula 
Position 10 16 48, -57 57
Constellation Carina
Camera and Telescope STXL16200 and 36.8 cm Ritchey Chretien
Focal Ratio F9
Exposure Details Hubble palette image (SIIHaOIII) with RGB stars using Astrodon series 2 filters with  R=G=B=60 minutes, Hydrogen Alpha=140 minutes, Oxygen III=260 minutes, SII=330 minutes.  R=G=B=80 minutes. All binned 2x2.
Description (adapted from Don Goldman) NGC 3199 (RCW 48) is a bright, 20 crescent-shaped nebula in the constellation of Carina about 12,000 light years distant.  Deeper images show the bright crescent to be part of a larger elliptical bubble.  It is referred to as a ring nebula and is associated with a galactic Wolf-Rayet star (HD 89358), which is not at the center of the bubble. This could suggest that the WR star has moved since the nebula was formed.   It resides in a diffuse HII region as shown by the faint background nebulosity.