def correct_iso_set(path, age, mu, Av):
    print(os.path.exists(path))
    
    isoAtAge = interp_isochrone_age(iso, age)

    isoAMags = bc.apparent_mags(
        10**isoAtAge[:, 10],
        isoAtAge[:, 12],
        isoAtAge[:, 7],
        mu = mu,
        Av = Av,
        filters = ("WFC3_UVIS_F275W", "WFC3_UVIS_F606W", "WFC3_UVIS_F814W")
    )
    return isoAMags