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Unformatted text preview: Strength on spectral lines tell us a stars temperature a) To determine the temperature at two positions on the curve, you have to compare it to another element and take that temperature that aligns both of them Astronomers always want to make a bigger telescope Some light is lost as it passes through a glass lens Astronomical mirrors are curved and the reflection is taking place on the front Two type of telescopes are refracting (uses lens) and reflecting (uses mirror) Reflector telescope are the majority since they can gather as much light as possible...
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This note was uploaded on 05/03/2011 for the course AST 301 taught by Professor Harvey during the Fall '07 term at University of Texas at Austin.
- Fall '07