等級関連memo

最終更新 : Jun. 14, 2004.

AB magnitude

mAB=-2.5 log(Fν) - 48.60
Fν [erg/s/cm^2/Hz]

Photon数
N [photons/s/cm^2/angstroom] = 548 / λ[μm] × 10 ^(-mAB/2.5)

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