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File:80mmSemiAPO.jpg - BirdForum Opus

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80mmSemiAPO.jpg ‎(650 × 299 pixels, file size: 21 KB, MIME type: image/jpeg)

80mm dia, 500mm FL, f6.2 semi APO telescope

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current15:02, 23 April 2007Thumbnail for version as of 15:02, 23 April 2007650 × 299 (21 KB)BirdDB (talk | contribs)80mm dia, 500mm FL, f6.2 semi APO telescope

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