UBVR Transmission Curves AA/100 U B V R 29 0.000 30 0.025 31 0.250 32 0.680 33 1.137 34 1.650 35 2.006 0.000 36 2.250 0.006 37 2.337 0.080 38 1.925 0.337 39 0.650 1.425 40 0.197 2.253 41 0.070 2.806 42 0.000 2.950 43 3.000 44 2.937 45 2.780 46 2.520 47 2.230 48 1.881 0.020 49 1.550 0.175 50 1.275 0.900 51 0.975 1.880 52 0.695 2.512 53 0.430 2.850 54 0.210 2.820 55 0.055 2.625 56 0.000 2.370 57 2.050 58 1.720 0.000 59 1.413 0.03 60 1.068 0.09 61 0.795 0.35 62 0.567 0.80 63 0.387 1.58 64 0.250 1.96 65 0.160 1.91 66 0.110 1.72 67 0.081 1.53 68 0.061 1.33 69 0.045 1.12 70 0.028 1.08 71 0.017 0.91 72 0.007 0.70 73 0.000 0.57 74 0.49 75 0.39 76 0.16 77 0.24 78 0.16 79 0.10 80 0.06 81 0.02 82 0.00 UBV RESPONSE FUNCTIONS FROM MATTHEWS AND SANDAGE R RESPONSE FUNCTION FOR SANDAGE'S R (APPROXIMATELY THE SAME AS THE GUNN OR THE PHOTOGRAPHIC BAND) FROM HUCHRA