Question

You measure a star to have a parallax angle of 0.14 arc-seconds. What fraction of a degree is this?

Answer:  
/Problem 2 - Parallax to human eye

2. [3pt]
By how many times would you have to magnify this effect for it to be visible to the human eye? (The limit of human vision is about 1 arc-minute)

Answer:  

3. [3pt]
What is the distance to this star in parsecs?

Answer:  

4. [2pt]
What is the distance to this star in light years?

Answer:  

5. [2pt]
For another star that is twice as far away, what will be true about its parallax?

A) The parallax angle for the more distant star will be cut in half to 0.070 arc-seconds.
B) The parallax angle for the more distant star will be quadrupled to 0.56 arc-seconds.
C) The parallax angle of the more distant star will be the same.
D) The parallax angle for the more distant star will be cut by a factor of four, to 0.035 arc-seconds.
E) The parallax angle for the more distant star will be doubled to 0.28 arc-seconds.

Answer 1

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