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20 lines
1.7 KiB
XML
20 lines
1.7 KiB
XML
<?xml version="1.0" encoding="UTF-8"?>
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<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" width="1328px" height="408px" viewBox="-251 -51 332 102" version="1.1">
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<title>Cassegrain telescope</title>
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<desc>Diagram of the lightpath through a Cassegrain telescope.</desc>
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<g style="stroke:#000;stroke-width:.5;fill:none">
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<path d="M-235,0 h320" stroke-dasharray="10,3,5,2"/> <!-- scope axis -->
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<path d="M-140,-45 H30 v30 h20 M-140,45 H30 v-30 h20" stroke-width="1"/> <!-- scope body -->
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<path d="M5,-40 a9,40 0 0,1 8,25 h12 v-25 z M5,40 a9,40 0 0,0 8,-25 h12 v25 z M-115,-17 h-5 v34 h5 a4,20 0 0,0 0,-34" fill="cyan" stroke="none"/> <!-- lens fill -->
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<path d="M25,-40 V40 h-20 a9,40 0 0,0 0,-80 z" stroke="gray"/> <!-- gray lens -->
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<path d="M-204.535,-3.535 l7.07,7.07 M-204.535,3.535 l7.07,-7.07" stroke="gray"/> <!-- gray focus -->
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<path d="M5,-40 h20 v25 h-12 M5,40 h20 v-25 h-12 M-115,-17 h-5 v34 h5"/> <!-- dark lens -->
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<path d="M5.5,-40 a9,40 0 0,1 8,25 M5.5,40 a9,40 0 0,0 8,-25 M-115,-17 a5,20 0 0,1 0,34 M65,-10 h10 h-5 v20 h-5 h10 M66.465,-3.535 l7.07,7.07 M66.465,3.535 l7.07,-7.07" stroke="#F00" stroke-width="1"/> <!-- red part of lens, eyepiece, cross -->
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<g stroke="#7F00FF">
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<path d="M-250,-35 h260 L-114,-13 L70,0 M-250,35 h260 L-114,13 L70,0"/> <!-- purple rays: top, bottom -->
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<path d="M-215,-37.5 l4.33,2.5 l-4.33,2.5 M-215,37.5 l4.33,-2.5 l-4.33,-2.5"/> <!-- arrow marks -->
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</g>
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<path d="M-114,-13 L-200,0 M-114,13 L-200,0" stroke="#AAA"/> <!-- extended arrows -->
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<path d="M-250,-30 l260,-6.5 L-114,-14.5 L70,-10 M-250,40 l260,-6.5 L-114,11.5 L70,-10" stroke="#00A700"/> <!-- green rays -->
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</g>
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</svg> |