I found on another website a luminosity for Vega of 52 L sun and Fomalhaut of 16.5 suns. This will give closer answer to the accepted value.
I get 1.24 after the difference of the magnitude of Vega is taken into account.
Plus if you put all the errors in your calculations (I forget how) the accepted value would probably be within the range of values.
Last edited by TheOncomingStorm; 2010-Oct-20 at 09:15 PM.
Reason: subtracter instead of added
...I'm still free, you can't take the sky from me.