M57 - Planetary Nebula, Lyra
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| The famous ring nebula M57 is often regarded as the prototype of a planetary nebula, and a showpiece in the northern hemisphere summer sky. Recent research has confirmed that it is, most probably, actually a ring (torus) of bright light-emitting material surrounding its central star, and not a spherical (or ellipsoidal) shell, thus coinciding with an early assumption by John Herschel. Viewed from this equatorial plane, it would thus more resemble the Dumbbell Nebula M27 or the Little Dumbbell Nebula M76 than its appearance we know from here: We happen to view it from near one pole. | ||
| Location | J65 Celbridge Observatory | |
| Date/Time (UTC) | 30 May 2006, 00:30 | |
| Optics | 200mm SCT, F6.3 reducer | |
| Filters | None | |
| Imager | Meade DSI-C | |
| Mount | Astro-physics 1200GTO | |
| Exposure details | 19 images * 120 seconds | |
| Software | MaximDL, Photoshop 7 | |
