Measuring fiber position errors from spectral data
Measuring fiber position errors from spectral data
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 …