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Proceedings Paper

Atmospheric refraction effect and its correction in LAMOST
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Paper Abstract

Atmospheric dispersion and differential refraction will lead to a non-neglectable light loss varying with wavelength across the field of view during the integral time of multi-fiber spectral observation. These effects will be more severe in telescopes with large field of view such as the Large sky Area Multi-Object Fiber Spectroscopic Telescope(LAMOST). We have calculated the light loss due to atmospheric refraction for LAMOST. To improve the efficiency, we could move individual fiber to correct its 5000 A monochromatic displacement during observation, the best number of this kind of track should be balanced between the displacement correction and the fiber positioner error. We have calculated the best track number by monte-carlo simulation for different declination field and different position of the field. Also we have derived the fiber positioner error tolerance from simulation.

Paper Details

Date Published: 28 September 2004
PDF: 10 pages
Proc. SPIE 5489, Ground-based Telescopes, (28 September 2004); doi: 10.1117/12.550852
Show Author Affiliations
Haotong Zhang, National Astronomical Observatories (China)
Yongheng Zhao, National Astronomical Observatories (China)
Huoming Shi, National Astronomical Observatories (China)

Published in SPIE Proceedings Vol. 5489:
Ground-based Telescopes
Jacobus M. Oschmann Jr., Editor(s)

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