Astronomy and Astrophysics – Astrophysics
Scientific paper
Jun 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007rmxac..28...17a&link_type=abstract
The 3rd Mexico-Korea Conference on Astrophysics: Telescopes of the Future and San Pedro Mártir (Eds. Stan Kurtz, José Franco, Se
Astronomy and Astrophysics
Astrophysics
1
Instrumentation: Spectrographs, Techniques: Spectroscopic
Scientific paper
The basic principles of integral field spectroscopy 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 design used in the Integral Field Unit of the Gemini Near-Infrared Spectrograph. 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 such as the San Pedro Mártir twin telescope project. Conceptual designs of this type already exist, including one aimed at the IMACS spectrograph on Magellan.
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