Positioning of the Spitzer/IRS slits over a F656N exposure of M2-9 (Hubble Space Telescope Legacy Archive). Both slits were centred on top of the northern lobe, the Short-High (green; 4.7″ × 11.3″) at a PA = 131.2°and the Long-High (red; 11.1″ × 22.3″) at a PA = 46.1°. North is up, east is left. The underlying Hα image comes from 1996. By the time that Spitzer observed M2-9, the underlying structure of M2-9 was rather different, and the nebular structure inside the green aperture had changed.