Best fits of the flux density from: 1) two Kurucz atmosphere models representing the companion B (green dashed line) and the OB-type inner companion (orange line), 2) one PoWR model representing the WC9 star (blue line), and 3) one blackbody model representing the dusty pinwheel (red dashed line). The flux ratio is obtained by comparison between theWR+OB flux density (grey line) and the companion B. We also show the total flux density (black dashed line) and position of the different filters used (vertical black dotted lines).