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GARDEN NATURE
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NEST BOXES & REFUGEES FOR WILD GARDEN ANIMALS
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NEST BOXES & REFUGEES FOR WILD GARDEN ANIMALS
AMATEUR TELESCOPE MAKING I
Ingalls A.
Reedición mejorada dedicado a la construcción y equipamiento de telescopios. En este volúmen se describen la talla de un espejo para telescopio Newton y las diferentes pruebas ópticas. Sigue una descripción pormenorizada de los elementos y materiales necesarios para la fabricación de un buen espejo (desde el tipo de vidrio hasta el parabolizado y sus problemas, pasando por los abrasivos hasta llegar a los diseños ópticos. Por último se trata sobre los observatorios , diferentes diseños y protección frente a los efectos térmicos.
