Lec 6 - Angular Size An object’s angular size appears...

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    AST101 Review of angular measure, coordinates. Additional notes for Lecture 6
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We measure the sky using  angles A bit of review . ..
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Angular Measurements  Full circle  =  360º  1º  =  60  (arcminutes)   1  =  60  (arcseconds)
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Unformatted text preview: Angular Size An object’s angular size appears smaller if it is farther away Physical Size = Angular Size X ( 2 X Pi X Distance / 360 o ) (Degrees for angular size; Pi = 3.1416)...
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Lec 6 - Angular Size An object’s angular size appears...

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