2015
DOI: 10.1088/1674-4527/15/4/012
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Measuring fiber position errors from spectral data

Abstract: Precise fiber positioning is crucial to a wide field, multi-fiber spectroscopic survey such as the Guoshoujing Telescope (the Large Sky Area Multi-Object Fiber Spectroscopic Telescope, LAMOST). Nowadays, most position error measurements are based on CCD photographic and image processing techniques. These methods only work for measuring errors orthogonal to the telescope optical axis, but there are also errors that lie parallel to the optical axis of the telescope, such as defocusing, and errors caused by the e… Show more

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