13. The heads of the Gemini twins (Castor and Pollux) will rise at midnight arou
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Question
13. The heads of the Gemini twins (Castor and Pollux) will rise at midnight around the start of which month?
14. At the start of which month can Hercules be found directly overhead at 1:00 a.m.?
15. In what month will you find Orion near the southern horizon at midnight?
16. Name one constellation you will not be able to see on the night of September 1. Use your planisphere to verify your answer, and explain how you know. 4 Other questions
17. Imagine that you are stargazing in a field surrounded by tall trees that obscure your view of stars near the horizons. Name a constellation that will always be difficult to see from this location. Explain how your planisphere tells you this.
18. Castor and Pollux, the twins of the constellation Gemini, form a pair of stick figures in the night sky. Imagine that you are looking at the night sky on October 1 at 3:00 a.m. (Daylight Savings time). At this time, will you see the twins right-side-up, upside-down, or lying sideways in the sky? Explain your answer.
19. On most planispheres, constellations like Hydra seem to take up a large part of the night sky; however, this is not the case. What makes some constellations appear much larger on paper than on the celestial sphere? Explain. (Hint: Why does Antarctica look tiny on a globe, but huge on a rectangular map?)
20. Planispheres are created for a specific line of latitude. For example, a planisphere designed for North Carolina could be used in other states that lie directly east or west; however, it would be inaccurate for other locations like South Carolina. a. Where would Polaris appear in the planisphere window if you were making a planisphere for the North Pole? Explain your answer. b. Where would Polaris appear in the planisphere window if you were making a planisphere for Quito, Ecuador, which lies on the Equator? Explain your answer. c. To turn a North Carolina planisphere into a South Carolina planisphere, which way would Polaris have to be shifted in the planisphere window: northward, southward, eastward, or westward? Explain your answer.
Explanation / Answer
13. September
14. May
15. It’s around late November and early December
16. Except Aquarius, all other constellations are not able to see on the night of September.
17.
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