3D Spectroscopy in Astronomy (Canary Islands Winter School by Evencio Mediavilla, Santiago Arribas, Martin Roth, Jordi

By Evencio Mediavilla, Santiago Arribas, Martin Roth, Jordi Cepa-Nogué, Francisco Sánchez

Concurrently storing either spectral and spatial info, 3D spectroscopy deals a brand new option to take on astrophysical difficulties, and opens up new traces of study. considering that its inception within the eighties and early nineties, learn during this box has grown tremendously. huge telescopes all over the international at the moment are built with indispensable box devices, and tools of the longer term James Webb area Telescope could have fundamental box spectroscopic functions. these days, extra attempt is devoted to refining recommendations for decreasing, interpreting and studying the information acquired with 3D spectrographs. Containing lectures from the 17th iciness college of the Canary Islands Astrophysics Institute, this publication explores new 3D spectroscopy ideas and information. A extensive and balanced presentation of study during this box, it introduces astronomers to a brand new new release of tools, widening the allure of necessary box spectroscopy and aiding it develop into a robust device in tackling astrophysical difficulties.

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Mancini, D. ET AL. (2003), SPIE, 4841, p. 1670 Mediavilla, E, Arribas, S. , Hippelein, H. (1992), A&A, 264s, 455 Michlovic, J. T.

21). g. , 2004). The deep surveys planned with this instrument are expected to discover faint Lyα emitters within the 1 arcmin FoV at unprecedented flux levels down to ≈ 3 × 10−19 erg s−1 cm−2 . 3 A brief history of 3D spectroscopy Since the early 1980s, the desire to simultaneously acquire spectral and spatial information in a single exposure motivated various groups to develop integral field spectrographs for astronomical telescopes. 1, the goal was to obtain three-dimensional datasets (datacubes), which should be generated from a single exposure under identical observing conditions, contrary to datacubes that are assembled through a scanning process involving multiple exposures.

G. 5 m (Meisenheimer and Hippelein, 1992). The major advantage of these instruments was a large FoV, high spectral resolution and large throughput. Several disadvantages – such as ghost images, stray light, interference artifacts, problems with flux calibration, the narrow useful wavelength range for a given etalon, and a relatively complicated data reduction process – have prevented these systems from becoming standard instruments for the common observer. Also, FP imagers are not true 3D spectrographs in the sense that they require scanning.

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