A New Classic is Born

books:

	• Understanding Foucault David A. Harbour Netzari Press, 2008 - 118 pages average customer review:based on 1 review view larger image
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A New Classic is Born

This book truly is destined, as its cover suggests, to be mentioned in the same breath as Texereau and Ingalls. Unlike the works of the other two authors, however, this treatise is the first to explain the Foucault Test in a manner that will render it completely understandable for anyone with an interest in telescope optics, regardless of their experience level. Additionally, numerous techniques for parabolization and figure correction are given (in detail) which I have not seen or heard of previously. If you have any interest in producing or understanding the making of a telescope mirror, you need this book in your library and the knowledge it conveys in your mind. I have read through the volumes of Texereau, Ingalls and others and never grasped Foucault thoroughly until I read David Harbour's writings. This book should find its way into the required reading for the top technical schools in the world very soon. I am fortunate to have come across these writings, which have enhanced both my knowledge and abilities.

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David A. Harbour presents a brilliant narrative for the Amateur Telescope Maker (ATM), on exactly how the "Foucault Test" is interpreted. Through a series of "foundation lessons" Mr. Harbour ensures the ATM understands what the Foucault Test is revealing, and what to do about it as he figures the telescope mirror to achieve the perfect paraboloid. Imagine if the makers of the Hubble Space Telescope had used this book as a guide to test the HST's primary before launch! The savings would have been in the millions! Well, that may be a stretch, but for the ATM, who has taken on the delightful but challenging task of making his own telescope mirror, how nice it would be to have a guide to ensure success!. Success is at hand. Dave Harbour presents a thorough and informative instruction on just how to be sure the mirror is perfect! This book is for the ATM bookshelf to accompany the classics of Porter, Texereau and others.

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