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tutorial1_2014
tutorial1_2014

... Calculate their angular separation if we treat them as points on a planar triangle. Now calculate their separation treating them as points on a sphere. Under which conditions would the two answers be closest? Question 3: Derive the transformation equations for converting from Galactic to Supergalact ...
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Brightness + Magnitude of Stars
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Uniqueness of the Earth, Lebo, 7-30
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P10263v1.2 Lab 5 Text
P10263v1.2 Lab 5 Text

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Purpose The student will explore parallax, a primary distance
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... orbit; but the stars, which have latterly been gradually approaching, have within the last two years closed up so rapidly as to be in the early part of the current year quite beyond the power of my instrument, the distance being estimated as not exceeding o"· 4, while only a rough guess could be mad ...
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Astronomy 360 - Indiana State University

... magnitude of a first magnitude star to a 6th magnitude star is a factor of 100. Thus a 1st mag star is 100 times brighter than a 6th mag star. This represents a range of 5 so that 2.512 = the fifth root of 100. Thus the table hierarchy is the Absolute Magnitude is defined as how following. Magnitude ...
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Cosmic distance ladder



The cosmic distance ladder (also known as the extragalactic distance scale) is the succession of methods by which astronomers determine the distances to celestial objects. A real direct distance measurement of an astronomical object is possible only for those objects that are ""close enough"" (within about a thousand parsecs) to Earth. The techniques for determining distances to more distant objects are all based on various measured correlations between methods that work at close distances and methods that work at larger distances. Several methods rely on a standard candle, which is an astronomical object that has a known luminosity.The ladder analogy arises because no one technique can measure distances at all ranges encountered in astronomy. Instead, one method can be used to measure nearby distances, a second can be used to measure nearby to intermediate distances, and so on. Each rung of the ladder provides information that can be used to determine the distances at the next higher rung.
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