M57 Ring Nebula Redux

My second attempt at getting a good image of M57. The earlier one is here.

M57, the Ring Nebula, a planetary nebula in the constellation Lyra. The ring is an expanding cloud of gas blown off a central red giant star, which cannot be seen in this image. It’s about 5,000 light years distant.

Shot 19-20 June 2010; Mt. Tamalpais State Park, California; ISO 800, Exp 90 min (60 x 1.5 minutes), f/5.2, Canon EOS 5D & Televue NP127is, 2x Barlow. Post-processing with ImagesPlus 3.0 and Photoshop CS4.

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