The nebula is a cloud of glowing gas and is the leftover debris of an exploded star. The nebula is actually a bubble, but only along the edges is it thick enough for use to see. This causes the bubble to appear as a ring in space when we look at it. The star in the very center of the nebula is the remaining core of the original star that exploded.

This is the second Ring Nebula image I've taken. It was done from my backyard in Edmonton. This was a test image taken during the initial setup and commissioning of a new EQ8 mount. The image also helped verify the collimation on the EdgeHD 11 that I had recently adjusted.

One of these days I will eventually get a picture of this nebula from a proper dark sky location. Until then it remains a favorite test subject for trying new gear from home.