Sh2-284
Sh2-284 is a giant HII region. Inside of it is an open star cluster, whose light is energizing the hydrogen gas in the nebula. Stellar winds from the star cluster are clearing out the center of the nebula, giving it a distinctive hollow spherical shape.
| Observatory: | WIYN Observatory Kitt Peak, Arizona |
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| Telescope: | WIYN 0.9-Meter |
| Instrument: | Mosaic I |
| Astronomer: | T.A. Rector (University of Alaska Anchorage) and WIYN Observatory |
| Date of Observation: | 01-03-2004 |
| Filters and Assigned Colors: | Hydrogen alpha (red) and Oxygen [OIII] (blue) |
| Exposure Times: | 5x10min in H-alpha, 3x10min in [S II] |
| Location of Image: | Monoceros |
| Field of View: | 57.3 x 50.5 arcmin |
| Orientation: | North is left, East is down |
| Link to Larger Image | |
| Link to Full Resolution Image | |
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