NGC 1491
NGC 1491 is an emission nebula. It is glowing deep red because the hydrogen gas in the nebula is energized by hot, massive stars embedded within. These stars emit copious amounts of ultraviolet (UV) light that causes the gas to glow.
| Observatory: | Kitt Peak National Observatory Kitt Peak, Arizona |
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| Telescope: | KPNO 4-Meter |
| Instrument: | Mosaic I |
| Astronomer: | T.A. Rector (University of Alaska Anchorage), H. Schweiker & S. Pakzad (NOAO/AURA/NSF) |
| Date of Observation: | 09-17-2011 |
| Filters and Assigned Colors: | B (blue), I (orange) and Hydrogen-Alpha (red) |
| Exposure Times: | 5x4min in B, 5x3min in I and 5x10min in H-alpha |
| Location of Image: | Perseus |
| Field of View: | 26.7 x 26.6 arcmin |
| Orientation: | North is right, East is up |
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| Link to Full Resolution Image | |
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