learningastronomy
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Summary:: Finding the corrected coefficients
Suppose you obtained the following magnitude results based off your observations from standard stars: ##\kappa_0 = 0.65##, ##\kappa_1 = 0.10##, ##\alpha_0 = 2.00##, ##\alpha_1 = 0.05##, where ##\kappa_0,\kappa_1## are the extinction coefficients and ##\alpha_0, \alpha_1## are the standard transformation coefficients.
For the target spectral A0V you got the following uncorrected ##v^A_V = 9.00## extinction instrumental magnitude (V-band).
1. Find the corrected extinction instrumental magnitude.
2. Now find a calibrated magnitude of the target (V).After googling around, there is very little information and examples of extinction coefficients and standard transformation and even my book talks about it but doesn't provide any examples.
Anyways, what I know thus far is that for the spectral A0V has B-V color of zero and for Bouguer’s law we have ##m_{\lambda}^A=m_{\lambda}+[\kappa_0+\kappa_1 (B-V)]X## where ##X## is the air mass.
Suppose you obtained the following magnitude results based off your observations from standard stars: ##\kappa_0 = 0.65##, ##\kappa_1 = 0.10##, ##\alpha_0 = 2.00##, ##\alpha_1 = 0.05##, where ##\kappa_0,\kappa_1## are the extinction coefficients and ##\alpha_0, \alpha_1## are the standard transformation coefficients.
For the target spectral A0V you got the following uncorrected ##v^A_V = 9.00## extinction instrumental magnitude (V-band).
1. Find the corrected extinction instrumental magnitude.
2. Now find a calibrated magnitude of the target (V).After googling around, there is very little information and examples of extinction coefficients and standard transformation and even my book talks about it but doesn't provide any examples.
Anyways, what I know thus far is that for the spectral A0V has B-V color of zero and for Bouguer’s law we have ##m_{\lambda}^A=m_{\lambda}+[\kappa_0+\kappa_1 (B-V)]X## where ##X## is the air mass.