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| Make sure the only deep sky objects displayed are globular clusters. Set the field to 45°. Center the display at 18h -30°. Count the number of globular clusters in the field of view. Now center the display one-fourth of the sky away at 12h 0°. Again count the globular clusters. Repeat for 6h +30° and 0h 0°. How can you account for the different numbers of globular clusters seen in different directions? |