Another reshoot from last year. Abell 31 (=PK219.1+31.2) is a giant planetary nebula in Cancer. Guide 8.0 gives a size of more than 16 arcminutes. This picture was taken at f/1.9 where the X-axis measures nearly a
degree, so it is quite remarkable that the PN still fills a good part of the FOV.
Taken from the middle of Berlin with an 8" LX200 at f/1.9, MX716 camera,
video autoguider, Astronomik Halpha filter for 20x10 minutes.