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Annular Eclipse with a Questar 3 1/2

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Questar advertisement, <em>Sky and Telescope</em>, December 1985
Questar advertisement, Sky and Telescope, December 1985. Questar Corporation

Sky and Telescope, April 1985, IFC.
Sky and Telescope, May 1985, IFC.
Sky and Telescope, December 1985, IFC.
Sky and Telescope, August 1986, IFC.