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Bitmap Image  |  1994-05-16  |  35.4 KB  |  355x392  |  8-bit (50 colors)
   ocr: COUDE FOCUS SECOND THIRD. MIRROR MIRROR LIGHT RAYS FIRST MIRROR FOURIH MIRROR REAL IMAGE In the Coudé focusing system, two extra mirrors reflect the light from the secondary mirror so that a real - image forms to the side of the telescope. Here, the image can be easily viewed and photographed.