| 21. | This time the optical element was a globe cut in half, with black concentric circles painted on it.
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| 22. | These bores could also utilize linear bearings, and micrometers for precise linear, and X-Y positioning of optical elements.
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| 23. | The most important optical element is a large, curved mirror that takes in the light and precisely focuses it.
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| 24. | A curved primary mirror is the reflector telescope's basic optical element that creates an image at the focal plane.
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| 25. | The primary optical elements of reflectors are mirrors, and they come in a wide variety of designs and mountings.
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| 26. | Adjustment of the sextant consists of checking and aligning all the optical elements to eliminate " index correction ".
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| 27. | This is simply the diameter of the primary optical element-whether lens or mirror, measured in either inches or millimeters.
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| 28. | This was called Macrobench which consisted of 150x150 mm mounting plates capable of securing up to 110 mm optical elements.
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| 29. | The technology is based on a new head design that aims to integrate optical elements into a more traditional head.
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| 30. | Besides, linear optical elements of optical systems may be the simplest building blocks to realize quantum operations and quantum gates.
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