Meade Image Processing Spécifications télécharger pdf (Page 76)

66 AUTOSTAR CCD PHOTOMETRY

The slopes are then determined and are equated to the filter band's

extinction coefficient.

Summary of Extinction Determination

Δ i

/ Δ X = k'

i

Δ v

/ Δ X = k'

v

0.9000 / 1.5250 = 0.590 0.6400 / 1.4690 = 0.436

k'

i = 0.590

k'

v

= 0.436

k'

vi

= 0.436 – 0.590 k'

vr

= 0.436 – 0.549

k'

vi

= –0.154 k'

vr

= –0.113

Δ r

/

Δ X = k'

r

Δ b

/ Δ X = k'

b

0.0615 / 1.500 = 0.041 0.1880 / 1.1439 = 0.131

k'

r = 0.041

k'

b = 0.131

k'

ri = 0.041 – 0.590

k'b

v

= 0.131 – 0.436

k'

ri = –0.549

k'b

v

= –0.305

Extinction Coefficients

k'

vi

= –0.154 k'

vr

= –0.113

k'

ri

= –0.5.49 k'

bv

= –0.305

k'

v

= –0.436

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