Flux calibration

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    Kevin Gurney
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    I  recently tried flux calibration of an Alpy spectrum using David
     Boyd’s method. I had acquired my own photometry for the target with a
     view to bring the two data sets together in this way…

    I started to read a bit more about flux and magnitudes etc and
    disappeared down a rabbit hole… 🙂 Flux can be a counting concept
    (photons, electrons, ADU) or energy-based. The relation between the
    two is given by the Planck–Einstein relation (E = h c / lambda) and so
    they are not directly comparable….

    However, in obtaining the instrument response using a MILES star, it seems we come good in the end.

    I attach a brief analysis that I hope sheds some light!

    Kevin

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