*** Tycho 2 VT vs Vsp V Johnson & Transformation vs VSF *** 8 observations dates of CE Tau, each is about 5 series of 4 images Canon EOS M3 + 70-200L2.8 at F/4, 20~25 sec / image - CE Tau + 8 comp - Delta is the difference between the catalog and the mean of all series - Sigma is the standard deviation of all series (44 series, not mean) - CE Tau sigma is the median sigma of the 44 series (~x0.5 for means) - CE Tau delta is the mean shift of the Vsp and VT light curves from respectively Vj=4.387 and VT=4.639 VSP No color corr. Transformed VSF zp+k.log(B/G) X21373DOG Sigma Delta Sigma Delta Sigma Delta Sigma B-V CE Tau 0.0057 ¯0.0955 0.0065 0.1305 0.0060 0.0876 0.030 2.059 49c 0.0048 0.0517 0.0051 0.0389 0.0053 0.0200 0.017 ¯0.116 54a 0.0076 0.1188 0.0077 0.1070 0.0064 0.0180 0.016 ¯0.107 55a 0.0042 ¯0.0482 0.0049 ¯0.0480 0.0044 ¯0.0293 0.021 0.002 55c 0.0048 0.0030 0.0055 0.0235 0.0054 0.0030 0.013 0.186 55d 0.0064 0.0236 0.0072 0.0545 0.0069 0.0107 0.018 0.281 66b 0.0097 ¯0.1384 0.0100 0.0395 0.0085 ¯0.0144 0.027 1.617 67d 0.0080 0.1177 0.0087 0.1098 0.0084 ¯0.0197 0.025 ¯0.072 68a 0.0098 ¯0.1281 0.0098 0.0402 0.0080 0.0119 0.023 1.530 Tycho 2 No color corr. Transformed VSF zp+k.log(B/G) VT Sigma Delta Sigma Delta Sigma Delta Sigma BT-VT CE Tau 0.0055 0.0731 0.0056 0.1032 0.0059 0.1019 0.036 2.515 49c 0.0049 0.0172 0.0049 0.0155 0.0048 0.0130 0.023 ¯0.143 54a 0.0073 0.0213 0.0074 0.0204 0.0073 0.0063 0.019 ¯0.074 55a 0.0040 ¯0.0145 0.0041 ¯0.0143 0.0039 ¯0.0117 0.021 0.021 55c 0.0049 0.0023 0.0050 0.0052 0.0050 0.0018 0.016 0.240 55d 0.0064 ¯0.0039 0.0065 0.0002 0.0064 ¯0.0062 0.022 0.337 66b 0.0096 ¯0.0163 0.0096 0.0072 0.0095 0.0028 0.030 1.958 67d 0.0081 0.0124 0.0082 0.0118 0.0080 ¯0.0083 0.028 ¯0.052 68a 0.0095 ¯0.0185 0.0095 0.0041 0.0095 0.0025 0.027 1.880 *********************