1.02: The Sun has an apparent visual magnitude of -26.75. (a) Calculate its absolute visual magnitude. (b) Calculate its magnitude at the distance of Alpha Centauri (1.3 pc). (c) The Palomar Sky Survey is complete to magnitudes as faint as +19.0. How far away (in parsecs) would a star identical to the Sun have to be in order to just barely be bright enough to be visible on Sky Survey photographs?
1.03: A certain globular cluster has a total of 104
stars; 100 of them have MV = 0.0 and the rest have MV
= +5.0. What is the integrated visual magnitude of the cluster?