S4G Mid-Infrared Type: (R)SA(s,nr)a

Filter: 3.6 microns

Telescope: Spitzer Space Telescope
North up, East left
Field Dimensions: 10.5 x 7.7 arcminutes
Surface Brightness Range Displayed: 11.0-28.0 mag per square arcsec

Notes:
outer ring is a perfectly elliptical feature; inner oval but hard to examine because of bright nucleus