These notes are chosen (mostly) from a number of the lectures I give in classes. Don't forget that you can access the materials for all my classes.
What can one learn from measurements of starlight? Let me just just a very few of the MANY things we can learn ...
Okay ... but how do we measure starlight accurately? Are there any complications?
We will then be ready to move on to measuring some real live (well, three-month-old, really) images of a variable star.
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