Filter response curve of HST F200LP (blue shade) and JWST F200W (coral shade), and the blackbody spectrum of two stars at 30 000 K (blue curve) and 4500 K (red curve) – characteristic temperature of BSGs and RSGs, respectively – shown at the rest frame and observed frame (z = 0.94) wavelengths. One can see that the two filters best capture the brightest part of the blackbody of the two classes of stars.