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QUESTION
How does the overall length of the Cassegrain telescope design compare with that of the Newtonian style?
How does the overall length of the Cassegrain telescope design compare with that of the Newtonian style? _________________________________________________ Can you come up with one or more reasons why the Cassegrain design might have advantages over the Newtonian? Why does the hole in the primary mirror not cause any additional loss in the lightcollecting ability of the telescope?
