Abell 31

Abell 31
Abell 31 is an ancient planetary nebula in the constellation of Cancer. It is estimated to be about 2,000 light years away. Although it is one of the largest planetary nebulae in the sky it is very faint and requires considerable imaging time.
Imaged in HOO Narrowband at El Sauce, Obstech, Chile on our RiDK 500
Integration Time 38 hours
Image Processing: Mike Selby