Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006spie.6269e..18l&link_type=abstract
Ground-based and Airborne Instrumentation for Astronomy. Edited by McLean, Ian S.; Iye, Masanori. Proceedings of the SPIE, Volu
Astronomy and Astrophysics
Astronomy
6
Scientific paper
High-resolution imaging spectropolarimetry in the visible and infrared wavelengths is the most effective and accurate observational diagnostic tool for many astrophysical problems, but many among them also require a spatially resolved two-dimensional field of view. However, it is difficult to achieve simultaneous three-dimensional (x, y, and λ) coverage using instruments with a conventional design. A conventional spectrograph achieves three-dimensional coverage either by scanning a tunable filter through the spectral window of interest, or by scanning a diffraction-grating-based long-slit spectrograph through the target region. Scanning in either spectral or spatial direction unavoidably degrades the quality of the data, and is time consuming. This paper describes a new visible/IR imaging spectropolarimeter design based on a novel birefringent fiber-optic image slicer and multiple-slit spectrograph. With this design, simultaneous 3-D imaging spectropolarimetry of astronomical objects with a large field of view and high spatial and spectral resolution can be achieved.
Lin Haosheng
Versteegh Alex
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