Affiliation
American Association of Variable Star Observers (AAVSO)
Thu, 08/18/2016 - 12:11
Here are the transformation coefficients for BSM_NM, from 5 photometric nights using Landolt standards at the beginning of 2016.
Tb_bv = 0.0744
Tv_bv = 0.0075
Tr_vi = 0.0202
Ti_vi = -0.0168
Tbv = 0.9548
Tvi = 1.0157
Arne
Revised Transformation Coeffs generated on 190227 from images from 180224.
description= TG - Version TG_V7.3 beta 5, Telescope= BSM_NM, Time created (UT) = 2019_03_01_02:04:48
[Coefficients]
Tbv= 1.004
Tb_bv= -0.050
Tv_bv= 0.003
Tvr= 1.016
Tv_vr= 0.004
Tr_vr= -0.007
Tri= 1.095
Tr_ri= -0.031
Ti_ri= -0.035
Tvi= 1.043
Tv_vi= 0.016
Ti_vi= -0.031
Tr_vi= -0.017
[Error]
Tbv= 0.030
Tb_bv= 0.074
Tv_bv= 0.044
Tvr= 0.048
Tv_vr= 0.096
Tr_vr= 0.104
Tri= 0.052
Tr_ri= 0.140
Ti_ri= 0.063
Tvi= 0.028
Tv_vi= 0.036
Ti_vi= 0.042
Tr_vi= 0.070
[R Squared Values]
Tbv= 0.925
Tb_bv= 0.015
Tv_bv= 0.011
Tvr= 0.858
Tv_vr= 0.015
Tr_vr= 0.011
Tri= 0.876
Tr_ri= 0.012
Ti_ri= 0.006
Tvi= 0.959
Tv_vi= 0.018
Ti_vi= 0.010
Tr_vi= 0.013
Transformation coefficients for new NM2 system including an E180 scope and ASI183 CMOS camera.
[Setup]
description= TG - Version TG_V7.4, Telescope= BSM_NM2, Time created (UT) = 2020_04_13_15:56:58
[Coefficients]
Tbv= 1.057
Tb_bv= -0.002
Tv_bv= -0.032
Tvr= 1.035
Tv_vr= -0.050
Tr_vr= -0.110
Tri= 0.941
Tr_ri= -0.117
Ti_ri= -0.054
Tvi= 0.990
Tv_vi= -0.029
Ti_vi= -0.014
Tr_vi= -0.057
[Error]
Tbv= 0.029
Tb_bv= 0.043
Tv_bv= 0.036
Tvr= 0.025
Tv_vr= 0.070
Tr_vr= 0.068
Tri= 0.049
Tr_ri= 0.074
Ti_ri= 0.099
Tvi= 0.024
Tv_vi= 0.036
Ti_vi= 0.039
Tr_vi= 0.035
[R Squared Values]
Tbv= 0.950
Tb_bv= 0.000
Tv_bv= 0.008
Tvr= 0.938
Tv_vr= 0.005
Tr_vr= 0.022
Tri= 0.889
Tr_ri= 0.022
Ti_ri= 0.007
Tvi= 0.966
Tv_vi= 0.007
Ti_vi= 0.002
Tr_vi= 0.024
BSM_NM2 New Coefficients - Updated 210408
Transformation coefficients for NM2 system including an E180 scope and ASI183 CMOS camera. Coeffs updated in VPhot.
SR filter was used rather than a Cousins R filter for these coefficients.
[Setup]
description= TG - Version 6.6, Telescope= BSM_NM2, Time created (UT) = 2021_04_09_00:24:01
[Coefficients]
Tbv= 1.065
Tb_bv= -0.001
Tbr= 1.091
Tb_br= -0.004
Tb_bi= -0.004
Tbi= 0.998
Tv_bv= -0.078
Tvr= 1.114
Tv_vr= -0.167
Tr_vr= -0.264
Tri= 0.836
Tr_ri= -0.301
Ti_ri= -0.034
Tvi= 0.948
Tv_vi= -0.093
Ti_vi= -0.008
Tr_vi= -0.141
[Error]
Tbv= 0.025
Tb_bv= 0.029
Tbr= 0.021
Tb_br= 0.020
Tb_bi= 0.015
Tbi= 0.019
Tv_bv= 0.032
Tvr= 0.063
Tv_vr= 0.068
Tr_vr= 0.072
Tri= 0.060
Tr_ri= 0.083
Ti_ri= 0.124
Tvi= 0.043
Tv_vi= 0.035
Ti_vi= 0.057
Tr_vi= 0.040
[R Squared Values]
Tbv= 0.970
Tb_bv= 0.000
Tbr= 0.976
Tb_br= 0.001
Tb_bi= 0.001
Tbi= 0.977
Tv_bv= 0.081
Tvr= 0.842
Tv_vr= 0.090
Tr_vr= 0.178
Tri= 0.786
Tr_ri= 0.181
Ti_ri= 0.003
Tvi= 0.894
Tv_vi= 0.100
Ti_vi= 0.002
Tr_vi= 0.159
Attached coeffs were generated on 210430 for NM2 using E180 scope and ASI183 camera. A Cousins R filter was used for these coeffs. They are different than those shown above using SR filter. Coeffs updated in VPhot.
[Setup]
description= TG - Version 6.6, Telescope= BSM_NM2, Time created (UT) = 2021_04_30_19:14:23
[Coefficients]
Tbv= 1.039
Tb_bv= 0.012
Tbr= 1.028
Tb_br= 0.006
Tb_bi= -0.000
Tbi= 1.015
Tv_bv= -0.033
Tvr= 1.001
Tv_vr= -0.085
Tr_vr= -0.072
Tri= 0.974
Tr_ri= -0.100
Ti_ri= -0.104
Tvi= 0.989
Tv_vi= -0.049
Ti_vi= -0.046
Tr_vi= -0.048
[Error]
Tbv= 0.015
Tb_bv= 0.025
Tbr= 0.010
Tb_br= 0.017
Tb_bi= 0.011
Tbi= 0.008
Tv_bv= 0.018
Tvr= 0.019
Tv_vr= 0.034
Tr_vr= 0.033
Tri= 0.023
Tr_ri= 0.036
Ti_ri= 0.034
Tvi= 0.013
Tv_vi= 0.018
Ti_vi= 0.016
Tr_vi= 0.018
[R Squared Values]
Tbv= 0.988
Tb_bv= 0.013
Tbr= 0.996
Tb_br= 0.011
Tb_bi= 0.004
Tbi= 0.997
Tv_bv= 0.050
Tvr= 0.977
Tv_vr= 0.083
Tr_vr= 0.073
Tri= 0.982
Tr_ri= 0.102
Ti_ri= 0.203
Tvi= 0.992
Tv_vi= 0.095
Ti_vi= 0.200
Tr_vi= 0.099