星等
8.In the illustration above, the limiting magnitude has been set to 8.
9.Two stars have the same absolute magnitude. One is thousand times farther away than the other. What is the difference in apparent magnitudes? Which magnitude larger?
10.To generate a desirable mission catalog,a novel method of the automatic selection of guide star,the regression selection algorithm,was presented in this paper. With the creation of distribution function of the dynamic visual magnitude threshold (VMT), the static VMT in the traditional visual magnitude filtering method was replaced by the dynamic VMT.
