Sh2-188
Sharpless 2-188 (Sh2-188) is an unusual planetary nebula that bears a remarkable resemblance to the Firefox logo. The expanding gas from the planetary nebula is colliding with ambient gas in the interstellar medium. The nebula is nearly circular in shape but is much brighter to the southeast (lower left) because the central star is moving rapidly in that direction. Faint wisps of gas can also be seen in the opposite direction.
| 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) and H. Schweiker (WIYN and NOAO/AURA/NSF) |
| Date of Observation: | 11-05-2010 |
| Filters and Assigned Colors: | Oxygen [OIII] (cyan) and Hydrogen-Alpha (orange) |
| Exposure Times: | 5x15min in each filter |
| Location of Image: | Cassiopeia |
| Field of View: | 21.2 x 16.6 arcmin |
| Orientation: | North is up, East is to the left |
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| Link to Full Resolution Image | |
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