NGC 2174 | ||
 | ||
| Description: | This emission nebula, NGC 2174, surrounds a loose cluster, NGC 2175. It was discovered in 1877 by Jean Marie Stephan. Although star formation in some areas of the universe is triggered by expanding ionization fronts around massive stars, NGC 2174/5 has several apparently detached clusters formed instead by hierarchical collapse. This nebula is rather drab in RGB, as can be seen in a mouse-over of this image with an RGB version. In addtition, there is a small animation (2.5 megs) of the RGB and narrowband image. | |
| Constellation: | Orion | |
| Distance: | 6400 light years | |
| Apparent Size: | 40' diameter | |
| Dates: | 14, 16, 21, 26, 29, 30 october; 3, 17 november 2006 | |
| Equipment: | AP155 @ f/7, AP1200, ST10XME | |
| Exposure: | SII....(Red).....8 hours Ha....(Green)..2 hours OIII..(Blue)....7 hours Astrodons, unbinned |
|