Site and content copyright Robert Allevo 2002-2010
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M57 |
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RING NEBULA
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Technical Details |
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| Optics | 12.5" RCOS operating at f/9 |
| Mount | Paramount ME |
| Camera | SBIG ST-10XME, CFW8-A |
| Filters | Tru Balance LRGB. |
| Date | June 25, 2005 |
| Exposure | LRGB = 120:30:30:30 minutes |
| Processing | MaximDL, Sigma Reject, Lucy-Richardson Deconvolution, Photoshop CS |
| Guiding | SBIG AO-7 |
| Binning | Lum - 1x1, RGB - 2x2 |
| Location | SkyFoto Observatory in East Hartland, Ct. |
| Notes | M57 is about 2300 light-years distant. We are probably looking down a tunnel of gas ejected by a star at the end of its nuclear-burning life. |
Previous Attempt
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Technical Details |
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| Optics | 12" Meade LX200 operating at f/12.2 |
| Camera | SBIG ST-8XE, CFW8-A |
| Filters | SBIG Standard LRGB. |
| Date | June 28-29, 2003 |
| Exposure | LRGB = 100:25:25:40 minutes |
| Guiding | Self Guided |