The ionized gas within and around the bubble. On top of the GLIMPSE 8 μm image, the red contours show the H_α emission from the SuperCOSMOS survey, the blue contours represent the MAGPIS 20 cm emission, and white contours show the ATLASGAL emission (at 0.3 Jy, 0.4 Jy, 0.5 Jy, 0.7 Jy, 0.9 Jy, 1.3 Jy, 1.8 Jy, and 2.5 Jy). The contour levels for the MAGPIS data are 0.002 Jy/beam, 0.003 Jy/beam, 0.004 Jy/beam, and 0.005 Jy/beam. The arrow indicates the peak position of the Hii region identified by Lockman (1989).