[Ken Crawford (KenC)]

There are many wonderful images of this amazing nebula including the new one by Martin and Bill.

Interestingly, my new image of this familiar object displays an outer structure that may not have been previously detected. Using a very narrow OIII filter (3nm), my instruments were able to capture a halo-like structure that is very faint but just visible after over 16 hours of exposure time. I have color mapped the OIII to blue and you can see its faint glow. I have also provided a super stretched and enhanced black and white image with very high contrast to better reveal its structures. The outer structures are currently being examined by a professional from the Canary Islands.

Be sure to use the full screen button and click to zoom and pan into the interesting details using the link below;

http://www.imagingdeepsky.com/Nebulae/M57/M57.htm

Kindest Regards,