Antarctica – a case for 3D-spectroscopy
DS or Integral-Field Spectroscopy (IFS) provides multiple spectra for each point of a 2-D field, rather than along a narrow, 1-D spectrograph slit only. Therefore, IFS does not require very accurate telescope pointing, nor do pre-assumptions about slit or aperture sizes have to be made. It avoids an...
Published in: | Proceedings of the International Astronomical Union |
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Main Author: | |
Format: | Article in Journal/Newspaper |
Language: | English |
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Cambridge University Press (CUP)
2006
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Subjects: | |
Online Access: | http://dx.doi.org/10.1017/s1743921307012355 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S1743921307012355 |
Summary: | DS or Integral-Field Spectroscopy (IFS) provides multiple spectra for each point of a 2-D field, rather than along a narrow, 1-D spectrograph slit only. Therefore, IFS does not require very accurate telescope pointing, nor do pre-assumptions about slit or aperture sizes have to be made. It avoids any ‘slit-losses’ due to seeing or atmospheric dispersion, which eliminates the need for any parallactic alignment or a dispersion compensator (see Fig. 1). |
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