Right panel: Composite image of CGCG 012-070 obtained from the Pan-STARRS archive (Chambers et al. 2016), covering a region of 60 × 60 arcsec². The image combines the r, i, and z bands. The green square indicates the NIRSpec field of view, which encompasses the inner region of the galaxy’s bulge. Small top panels: [O III] λ5007 (left) and Hα (center) flux maps for the z ∼ 2.89 lensed object, and a composite image (right), with the image of the lensed object shown in red and the 2.0 μm continuum image of the galaxy CGCG 012-070 in green. Bottom panel: Spectrum at the position of the lensed component A, identified in the top left panel. The observed spectrum is shown in black, the stellar population contribution of CGCG 012-070 in red, and the gas component in blue. The insets provide a zoom-in on the [O III] and Hα regions for the lensed object. The [Fe II] and H₂ labels, identified in black, represent Fe and H₂ lines from the foreground galaxy.