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Up To 50% Off Plan on progress. Reach your goals. Limited Time Discount Offer."The Dobsonian Telescope: A Practical Manual for Building Large Aperture Telescopes" by David Kriege and Richard Berry is a premier guide for amateur telescope makers focusing on constructing 14- to 40-inch instruments. First published in 1997, it provides comprehensive, step-by-step instructions for building stable, high-performance telescopes using accessible techniques. Find the book at Amazon .