•-Star
A is 5th magnitude, Star B is 0th magnitude, how much brighter is B than A?
•5 – 0
= 2.5 log (IB/IA)
•5/2.5
= 2 = log (IB/IA)
•(IB/IA) = 102 = 100
•-One
star is 1.5 magnitudes brighter than another star.
What is the equivalent intensity ratio?
•
•
•
•-Finally,
one star is 50 times fainter than another star.
Does it have a larger or smaller magnitude? What is the magnitude difference?
•
•
•