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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="876px" height="396px" viewBox="-251 -81 292 132" version="1.1">
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<title>Newtonian telescope</title>
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<desc>Diagram of the lightpath through a Newtonian telescope.</desc>
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<g style="stroke:#000;stroke-width:.7;fill:none">
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<path d="M-230,-45 h30 v-20 M-170,-65 v20 H30 v90 H-230" stroke-width="1"/> <!-- scope body -->
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<path d="M25,-40 V40 h-20 a9,40 0 0,0 0,-80 z" fill="cyan"/> <!-- primary mirror -->
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<path d="M-200,-2 h30 v4 h-30 z" fill="cyan" transform="rotate(45,-185,0)"/> <!-- secondary mirror -->
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<path d="M-243.535,-3.535 l7.07,7.07 M-243.535,3.535 l7.07,-7.07" stroke="gray"/> <!-- gray focus -->
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<path d="M5.5,-40 a9,40 0 0,1 0,80 M-194.19,-12.02 L-172.98,9.19 M-195,-75 h20 v-5 v10 v-5 h-20 v5 v-10 M-188.535,-78.535 l7.07,7.07 M-188.535,-71.465 l7.07,-7.07" stroke="#F00" stroke-width="1"/> <!-- red part of lens, eyepiece, cross -->
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<g stroke="#7F00FF"> <!-- purple color -->
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<path d="M-250,-35 h260 L-190,-7 L-185,-75 M-250,35 h260 L-173,9.38 L-185,-75"/> <!-- 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-190,-7 L-240,0 M-174,9.24 L-240,0" stroke="#AAA"/> <!-- extended rays -->
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<path d="M-250,-30 l260,-5 L-192,-9 L-195,-75 M-250,40 l260,-5 L-175,7.38 L-195,-75" stroke="#00A700"/> <!-- green rays -->
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<path d="M35,0 H-185 v-75" stroke-dasharray="10,2,5,2"/> <!-- scope axis -->
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<path d="M-185,0 H-240" stroke="gray" stroke-dasharray="10,2,5,2"/> <!-- axis extended -->
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</g>
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</svg> |