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Helix Nebula NGC 7293 - a large object with low surface brightness it is the closest known planetary nebula to us (~700ly). Radiation emitted by the extremely hot dying star in the centre causes many shells of gas previously blown off by the star to fluoresce producing the observed colours.
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| Camera: | SBIG STL11000M, Astrodon filters | Scope: | Takahashi TOA-130, f=1000mm, f7.7 (fov (cropped) ~0.6°x0.5°) |
| Mount: | Takahashi EM-200 Temma2 | Guiding: | External (E-finder) |
| Filters/Exposures: | L:R:G:B = 2x15:2x15:2x15:2x15min ≡ 2h00m | Location: | LMDSS Heathcote, Victoria, Australia |
| Date: | October 2010 | Processing: | CCDStack2, MIRA AL8 and Photoshop CS5 (reprocessed Sept 2012) |