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| Catalogue and alternative designations | RCW
71, Gum 46, Bran 397
|
| Type | Emission Nebula |
| Position | 12 50 23, -61 35 01 |
| Constellation | Crux |
| Camera and Telescope | STXL6303 and 36.8 cm RCOS Ritchey Chretien |
| Focal Ratio | F9 |
| Exposure Details | HaLRGB image using Astrodon filters. Hydrogen Alpha = 420 minutes, Luminance = 100 minutes, Red = Green = 120 minutes, Blue = 150 minutes. All exposures unbinned. |
| Description | RCW 71 is a small faint emission nebula behind the Coalsack in the southern cross and appears strongly reddened because of this. It's about 2 arcminutes across and is excited by the 11th magnitude star HD311999. The RCW catalogue was prepared by Rogers, Campbell and Whiteoak under the direction of Bart Bok in 1960 |