Euclid Filters
NISP Bands

Comparison of the NISP spectral response (shaded) with typical ground-based NIR passbands, in this case VIRCAM at VISTA (Sutherland et al. 2015). Both sets of response curves account for mirrors, filters, and detector QE. The grey line displays the atmospheric transmission for a precipitable water vapour of 1 mm and at zenith, taken from the ESO VISTA instrument description. The ground-based Z and K bands lie outside the NISP wavelength range, whereas Y, J, and H cover approximately half of the corresponding NISP passbands. (Fig.1 from Schirmer, et al. 2022)

The official filter curves (total transmission) are available here (in both fits and ascii formats).

Reference: "Euclid preparation XVIII. The NISP photometric system", by Euclid Collaboration, M. Schirmer, et al.,  A&A, 662 (2022) A92