Written for amateur astronomers just getting into this area of the subject, this is the perfect companion for first-time spectroscope users, with no heavy mathematics and with information on how to buy and use an entry-level spectroscope costing around $150.
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Written for amateur astronomers just getting into this area of the subject, this is the perfect companion for first-time spectroscope users, with no heavy mathematics and with information on how to buy and use an entry-level spectroscope costing around $150.
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