The reddening law used in Moneti et al. 2001, A&A 366, 106 Mid-infrared imaging and spectroscopy of the enigmatic cocoon stars in the Quintuplet Cluster lambda/um A_lambda/A_V ---------------------- 0.55 1.0000 0.65 0.7689 0.80 0.5584 1.00 0.4097 1.25 0.2804 1.65 0.1736 2.20 0.1108 2.50 0.0964 3.00 0.0923 3.50 0.0715 4.00 0.0530 4.50 0.0510 5.00 0.0492 5.50 0.0477 6.00 0.0464 6.50 0.0452 7.00 0.0441 7.50 0.0431 8.00 0.0463 8.50 0.0628 9.00 0.0989 9.50 0.1454 10.00 0.1431 10.50 0.1250 11.00 0.1023 11.50 0.0835 12.00 0.0721 12.50 0.0634 13.00 0.0569 13.50 0.0545 14.00 0.0553 14.50 0.0561 15.00 0.0573 15.50 0.0589 16.00 0.0612 16.50 0.0643 17.00 0.0677 17.50 0.0707 18.00 0.0726 18.50 0.0730 19.00 0.0721 19.50 0.0704 20.00 0.0683 20.50 0.0663 21.00 0.0644 21.50 0.0626 22.00 0.0610 22.50 0.0586 23.00 0.0561 23.50 0.0537 24.00 0.0515 and continuing as lambda^{-2} beyond.