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| Catalogue and alternative designations |
Waterfall Nebula, Herbig-Haro 222 (HH222) |
| Type | Nebula |
| Position | 00 47 08.5, -20 45 37 |
| Constellation | Orion |
| Camera and Telescope | STXL6303 and 36.8 cm Ritchey Chretien |
| Focal Ratio | F9 |
| Exposure Details | Luminance = 370 minutes, Red = Green = Blue = 60 minutes, Hydrogen Alpha = 510 minutes using Astrodon filters. Luminance binned 1x1. All others binned 2x2. |
| Description | HH222 is a peculiar nebula in the Orion molecular cloud complex about 1500 light years distant and is near the bright nebula NGC 1999. The waterfall stream is about 10 light years long. The morphology of this nebula is still not clearly understood. |