False-colour NISP image of a $4_{\cdot }^{\mathrm{\prime }}5\times 3_{\cdot }^{\mathrm{\prime }}0$ area of Euclid’s self-calibration field (Sect. 4.2.3). Filters Y_E, J_E, and H_E are shown in blue, green, and red, respectively. The depth is that of the EDS (Sect. 4.2), about 26.4 AB mag per band. The bright star has 11.5 AB mag, showcasing Euclid’s excellent performance for in-field stray light suppression. Field rotation between observations is evident from the diffraction spikes.