def GetWavelength(ins, filt):
    """ Get wavelengths information from using instrument and filter informations."""
    dic_filt = {'JWST': {'F277W': [2.776, 0.715],
                         'F380M': [3.828, 0.205],
                         'F430M': [4.286, 0.202],
                         'F480M': [4.817, 0.298]
                         }
                }

    wl = dic_filt[ins][filt][0]*1e-6
    e_wl = dic_filt[ins][filt][1]*1e-6

    return wl, e_wl