Combination of 5, 3 minute images unfiltered.
SBIG STL-1001E CCD. 20" f/6.8 Dall-Kirkham cassegrain telescope at prime focus.
NGC 2392, numbers 97 in the Herschel 400 list, is a bright planetary nebula in Gemini. The nebula is around magnitude 9.1, with the central star is also around 9th magnitude.