M 57
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M57 the Ring Nebula is located in the constellation Lyra, between the bottom two stars b & y Lyra that form a parallelogram below Vega. The Ring is one of the best known nebulas. The gas clouds that form this spectacular ring were thrown off by the magnitude 15.31 central star. The nebula itself is has only a total brightness of magnitude 9. It is about the same size as Jupiter when viewed through telescope with a size of only 2.5' arc minutes. It requires 6-8 inch scope to see it as a small smoke ring. To see the central star usually require a 10" or larger telescope. M57 also know as NGC 6720 is about 2,150 Light Years from Earth.
Telescope / Lens 11 Celestron SCT
Mount Type Astro-Physics 1200
Camera SBIG ST8XME, Astrodon Filters
 Filters Astrodon E-Series HaLRGB
 Film  CCD
 Exposure Total Exsposure -105 minutes; Ha,L, & RGB- binned 2x2
 Processing CCDSoft 5, AIP4WIN 2.0, Photoshop CS2,
 Date  09-21-2007
 Location  June Mountain, near Eagles Rest, South of Dexter, Oregon
 Conditions 3232' magnitude 6.2 Skies; Clear & Steady

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