Specifications

AUTOSTAR CCD PHOTOMETRY 73
Color Transform and Zero Point Calculations
Tables E-6(a), (b), and (c) list the Color Transformation and Zero
Point Calculations. These Tables are from a FileMaker Pro
database program developed at HPO.
Table E-6(a). (R-I) Color Transformation Plot Calculations.
Star ID (R – I) – (r – i)
0
(R – I)
M67-081 0.5698 –0.0280
M67-108 0.5449 0.6440
M67-117 0.5969 0.4380
M67-124 0.6070 0.2780
M67-127 0.6103 0.3280
M67-130 0.6377 0.2920
M67-134 0.5424 0.3250
M67-135 0.5556 0.4990
Table E-6(b). (V-I) and (V-R) Color Transformation Plot
Calculations.
Star ID (V – I) – (v – i)
0
(V – I) (V – R) – (v – r)
0
(V – R)
M67-081 1.1727 –0.0680 0.0556 –0.0400
M67-108 1.1546 1.3510 0.0624 0.7070
M67-117 1.2210 0.9040 0.0768 0.4660
M67-124 1.2663 0.5580 0.1120 0.2800
M67-127 1.1983 0.6500 0.0407 0.3220
M67-130 1.2964 0.5750 0.1114 0.2830
M67-134 1.1573 0.6590 0.0676 0.3340
M67-135 1.1905 1.0550 0.0876 0.5560
Table E-6(c). (V) and (B-V) Color Transformation Plot
Calculations.
Star ID (V – v
0
) (B – V) (B – V) – (b – v)
0
(B – V)
M67-081 22.1227 –0.0800 –0.9239 –0.0800
M67-108 22.0211 1.3700 –0.7143 1.3700
M67-117 21.9475 0.7840 –0.7667 0.7840
M67-124 21.9084 0.4570 –0.8638 0.4570
M67-127 21.9054 0.5520 –0.7907 0.5520
M67-130 21.9832 0.5480 –0.8976 0.5480
M67-134 21.9595 0.5800 –0.8080 0.5800
M67-135 21.9493 1.0600 –0.7898 1.0600