Spatially averaged intensity profiles of the Ca II K line at μ = 1. Upper panel: undegraded synthetic profiles for Model 1, 2, and 3 (blue, red, and green) are compared with the Hamburg atlas profile (black). Lower panel: degraded synthetic profiles (same notation) are compared with the SST/CHROMIS profile from our observations (black). The gray curve indicates the assumed CHROMIS spectral transmission profile.
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