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The Dominion Astrophysical Observatory - from the south

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The Dominion Astrophysical Observatory - from the south.jpg Course of light in telescope from star to focusThumbnailsHorse-boat at Empy’s Ferry, Osnabruck, OntarioCourse of light in telescope from star to focusThumbnailsHorse-boat at Empy’s Ferry, Osnabruck, OntarioCourse of light in telescope from star to focusThumbnailsHorse-boat at Empy’s Ferry, Osnabruck, OntarioCourse of light in telescope from star to focusThumbnailsHorse-boat at Empy’s Ferry, Osnabruck, Ontario