RE: Let's talk about the scale of measurement for stellar luminosity and different types of variable stars

Thanks, yes it is -26 for sun and faintest for 31 in modern measurement but in the beginning, I talked about Hipparchus scale when we didn't have a telescope. the scale was only between from 0 to 6 then it was broadened in both negative positive axis.I am not sure as well that the concept of negative number existed during his time as I am talking about ancient Greece. Logaritmic scale is basically a law in psychology which later modified is Astronomy as it obeys the relation between absolute and apparent magnitude @terrylovejoy