Molecular, atomic, and ionized gas in IC 342. This is a false-color composite of IC 342 showing molecular gas traced by our new NOEMA CO(1–0) survey (green), along with stellar light from DSS2 (white), atomic gas traced by the 21 cm line using the VLA (blue), and Hα emission from ionized gas (red). The dashed rectangle delimits the field of view observed with NOEMA and solid ellipses show galactocentric radii at 5, 10, 15, and 20 kpc.