Combination of 20, 3 minute exposures.
SBIG STL-1001E CCD. 20" f/6.8 Dall-Kirkham cassegrain telescope at prime focus.
Abell 9 is a fairly small and extremely faint planetary nebula located in Auriga. Only the slightest hint of the nebula is visible in this image. Abell 9 is one of the few Abell planetary nebulae that are not included in the PK catalogue.