Close-up view of the southwestern bar cusp of M 83, centered on J2000 coordinate 13 ^h36 ^m52 86, −29 ^d52 ^m55 3. Clockwise starting from left: high spatial resolution 21 cm image (ranging from 0.01 to 0.60 Jy km s ⁻¹, WISE HiRes 12 μm, WISE HiRes 3.4 μm, Hα, B band (with 12CO contours), and GALEX NUV. The green contours emphasize the gray-scale contrast. Overlaying the B-band image, the red contours are 12CO(1–0) with levels 2, 3, 4, 5, 6, 7, 8, 9 × 2.3 Jy km s ⁻¹ (Kenney & Lord 1991). At the distance of M 83, the physical scale of 10'' is 213 pc.