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		<subject index="0" >Re(3): THIRD TARGET - GLOBULAR CLUSTER M3</subject>

		<tonames index="0" >S194 06E real time observing</tonames>

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Well, yes, though we need to also know if it is a MS star, a giant or a supergiant.   And we can tell that by a close examination of the starlight.  So - yes!
Jonathan Ratty on 15 May 2006 at 23:01 +0000 wrote:
Does that mean we can use this as some form of rough measurement - if we know the colour of the star, we should be able to estimate it's brightness?

Jonathan