Basic principles of integral field spectroscopy

Details Basic principles of integral field spectroscopy Basic principles of integral field spectroscopy

Jun 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006newar..50..244a&link_type=abstract

New Astronomy Reviews, Volume 50, Issue 4-5, p. 244-251.

Astronomy and Astrophysics

Astronomy

11

95.55.Qf, 07.60.2J, 95.75.Fg, 95.75.Mn

Scientific paper

The basic principles of integral field spectroscopy (IFS) are reviewed using a figure of merit, the specific information density, as an objective means of comparison. This shows that the best method in theory is image slicing, especially as implemented in the advanced image slicer (AIS) design used in the IFU of the Gemini near-infrared spectrograph (GNIRS). However an alternative, a hybrid of lenslet array and slicer techniques, may offer a better compromise between theoretical performance and practicality for panoramic spectroscopic surveys requiring millions of spatial elements. The role of anamorphism in enhancing the performance of image slicers is presented. Finally, the importance of multiplexed IFS to extremely large telescopes (ELTs) is discussed.

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