Combination of 23, 2 minutes images. SBIG ST-9XE CCD.
30" f/5 newtonian at prime focus.
NGC 2371 and NGC 2372 are part of the same planetary nebula in Gemini. In a 10" telescope, it looks like two patches of light close to each other. Long exposure images reveal that it is material ejected from a faint star in between the two patches. Further out, there are two faint arcs where more material has been ejected.