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The ring Nebulae
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Click on image for a larger view
The ring Nebulae
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Discovered by Antoine Darquier de Pellepoix in 1779, the famous ring nebula M57 is often regarded as the prototype of a planetary nebula, and a showpiece in the northern hemisphere summer sky.
By chance, one of the background galaxies, IC 1296 just under the ring close to the star at the right, shows its barred, spiral structure making an attractive visual comparison with M57.
Interestingly, though IC 1296 is 200 million light-years away compared to only 2 thousand light-years for M57. More informations are available at the seds.org website |
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| Optics |
130 mm f/6.4 Astro-Physics EDF Refractor |
| Mount |
Astro-Physics AP 900GTO |
| Camera | SBIG ST-10XE. |
| Filters | SBIG CFW8A.With Astrodon LRGB Ha filters |
| Focuser | Robofocus focuser and Focusmax software |
| Dates | June 2006. |
| Location | Lentin Observatory |
| Exposure | LRGB = L=66mn, bin1,RGB:27minutes each. bin2. scale 1.7^s/pixel. |
| Acquisition | Image data acquired remotely using ACP4 Observatory control software., MaxIm DL 4 |
| Processing | MaxIm DL 4, Photoshop CS2, Registar, |
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Antoine Vergara