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Choosing and Using a New Cat: Getting the Most from Your Schmidt Cassegrain or Any Catadioptric Telescope (Patrick Moore's Practical Astronomy Series)

Choosing and Using a New Cat: Getting the Most from Your Schmidt Cassegrain or Any Catadioptric Telescope (Patrick Moore's Practical Astronomy Series)
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Choosing and Using a New Cat: Getting the Most from Your Schmidt Cassegrain or Any Catadioptric Telescope (Patrick Moore's Practical Astronomy Series)