Spectral energy distribution fitting and postage stamp cutouts (in Euclid and a VISTA YJHK_s stack) of two candidate T-type UCDs. Left: Brighter UCD with m_AB = 25. Right: Fainter UCD with m_AB = 26. As in Fig. 3, the orange diamonds represent the UltraVISTA photometry. The coloured squares show the Euclid photometry, with the I_E non-detection replaced with a 2σ upper limit. The remaining HSC photometry is shown by the black points. The coloured horizontal lines indicate the Euclid ad VISTA filter widths. The blue, orange, and red curves represent the high-redshift LBG, low-redshift dusty galaxy, and UCD solutions, respectively. The postage stamp cutouts are 6″ × 6″ and are scaled to saturate at 2σ below and 5σ above the noise level. Note the clear molecular absorption features seen by the VISTA + Euclid NIR photometry at λ > 1 μ. Also note the PSF-like morphology for the bright source, but a more irregular morphology for the faint source driven by noise.