Could you answer problem 3.01?
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Could you answer problem 3.01?
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Astronomy Measurements
Diameter of the Sun
To measure the diameter of the sun, we can use a pinhole camera and find the ratio of the
length of the camera to the diameter of the image. This ratio is equivalent to the ratio of
the distance to the sun and the diameter of the sun itself.
Astro 001 Fall 2022
Problem 3.01. Draw a diagram of the Sun's rays from both of its edges traveling through
the pinhole camera. Label the distance to the sun R, the diameter of the sun Do, the length
of the pinhole camera L and the size of the sun's image Io.
Problem 3.02. Use trigonometry to solve for the diameter of the sun.
1. L =
2. Io =
3. Do~
Problem 3.03. Below, write your measurements for the the length of your camera and the
size of the sun's image. Then, use the accepted value Ro= 149597870700 m to estimate the
diameter of the sun. Later, if you make your own measurement of an astronomical unit you
can use that value instead.
Upon completion, show this sheet to your instructor for a signature and credit.
Instructor Signature:
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