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Converting surface brightness units

  1. Mar 22, 2013 #1
    1. The problem statement, all variables and given/known data
    Simply want to know how to convert between mag arcsec-2 to solar luminosities per square parsec.

    2. Relevant equations
    (from wiki)

    3. The attempt at a solution
    If the surface brightness S (B band) is 27 mag per square arcseconds, then to solve for the brightness in solar luminosities per sq. pc, it'd just be the absolute magnitude of the Sun in the B band + 21.572 - 2.5log(the value I want) = 27 mag arcsec-2? Cause that doesn't work, haha. I'm terrible at conversions. Any suggestions? Thank you.
    Last edited: Mar 22, 2013
  2. jcsd
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