Results of the spectroscopic survey for object NIRISS-NGC1333-1 (NN1). Top panel: NIRISS WFSS spectrum (dark blue) with flux scaled to a value of 1 at a wavelength of 1.4 μm, and best-fit template (salmon pink) from Section 4.2 that has been smoothed using a Savitzky–Golay filter. Middle-left panels: NIRISS images of the object in the F150W and F200W filters with a 1″ scale. Bottom-left panels: calibrated slope image cutouts that are produced by the calwebb_spec3 pipeline for the NIRISS F150W and F200W filters and modified to apply the background subtraction. Bottom-right panel: map of the metric calculated as part of the spectral fitting. The templates that most closely fit the data (having lowest M; see Equation (1)) are located in the darkest regions. The best solution is marked with a yellow box, and the corresponding template is displayed in the top panel to compare to the observed spectrum. The remaining best nine solutions are marked in orange.