Overlay of ALMA 3 mm continuum emission map (red), JWST/NIRCam 4.05 μm Brα image (green), and HST/WFPC2 Hα image (blue) of NGC 6537. The ALMA continuum image is also presented in the black and white inset of the top panel. The annotations in the bottom panel denote features that are especially bright in Hα, Brα, or 3 mm continuum. Features that are bright in Hα or Brα and are likely directed toward and away from the observer, respectively, while the millimeter-wave continuum likely traces ionized material confined to the PN’s equatorial plane region (see Section 3.3.1).