1D optical spectrum of the L125B nucleus, extracted over an aperture of ∼1.2 arcsec (∼1.2 kpc at given redshift). Prominent emission lines are marked and labelled. The x-axis represents the wavelength in Angstroms, while the y-axis depicts the flux in units of ergs s⁻¹ cm⁻² Å⁻¹. The flattened part of the spectrum between 5500 and 6000 Å is the region where the end of the blue channel overlaps with the beginning of the red channel of MODS. Two additional sections beyond 7500 Åhave been normalised. They coincide with a sky absorption line and a noisy part of the spectrum.