Unformatted text preview: night must it be? Midnight. 7. What is declination? On page 69 what is the declination of the large orange galaxy, M31? The east to West lines of the sky, like latitude on the earth. 43 degrees 8. What is right ascension? On page 69 what is the right ascension of M31? It plays the same role as longitude but for the sky. About 45 minutes. 9. Using the data that you collected from EXERCISE #1 calculate: CIRCUMFERENCE / DIAMETER = _____40/16= 2.5 CIRCUMFERENCE / RADIUS = _____40/8= 5 10. From the star chart on page 69 it appears that all of the stars in the sky are fixed. Are the stars fixed or are they moving? They are moving extremely fast, but they appear to be fixed....
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- Spring '09
- Katie Stonesifer, Katie Stonesifer Read, retrograde motion rise, original angular size