NGC7731 - 3.6μm type: (R1R2')SAB(r)a

NGC7731

S4G Mid-Infrared Type: (R1R2')SAB(r)a

Filter: 3.6 microns

Telescope: Spitzer Space Telescope
North up, East left
Field Dimensions: 4.5 x 3.3 arcminutes
Surface Brightness Range Displayed: 14.0-28.0 mag per square arcsec

Notes:
at upper right in image; strong rings but almost no bar