Thanks to Michael for a very nice explanation of the magnitude system. One can adapt to any standard. You just have to know what it is. Tom Droege At 10:12 AM 8/9/02 -0400, you wrote: > Tom wrote: > > > The spectrum seems to show this star brighter in V than Ic. Yet the Ic is > > brighter than V? > > Ah, the wonders of the astronomical magnitude system :-)