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AUTOSTAR CCD PHOTOMETRY 83

Figure E-7. ((B – V) – (b – v)

o

) versus (B – V) Plot.

Slope = (1 – 1 / μ)

(1 – 1 / μ) = [Δ((B – V) – (b – v)

o

)) / Δ(B – V)]

Δ((B – V) – (b – v)

o

)) / Δ(B – V) = 0.275/1.800 = 0.1528

(1 – 1 / μ) = 0.1528

μ = 1 / (1 – 0.1528)

μ = 1.1803

μ is (B – V) Color Coefficient

Y-Intercept when MX = 0 is ζ

bv

/ μ

Y-Intercept = ζ

bv

/ μ

ζ

bv

= μ ∗ Y – Intercept

ζ

bv

= –0.9210 * 1.0871

ζ

bv

= –1.0012

ζ

bv

is (B – V) Zero Point

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