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Introduction -- What are interferometers, and how do they work? -- Interferometer types useful for optical metrology -- Measurement accuracy -- Some practical m

Contains 250 questions and answers about astronomy, particular for the amateur astronomer.

The Compendium of Practical Astronomy is unique. The practical astronomer, whether student, novice or accomplished amateur, will find this handbook the most com

Commercially-made astronomical telescopes are better and less expensive than ever before, and their optical and mechanical performance can be superb. When a goo