Double-pass spectroimaging with spectral multiplexing: TUNIS

Details Double-pass spectroimaging with spectral multiplexing: TUNIS Double-pass spectroimaging with spectral multiplexing: TUNIS

Oct 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011coska..41...99l&link_type=abstract

Contributions of the Astronomical Observatory Skalnaté Pleso, vol. 41, no. 2, p. 99-105.

Astronomy and Astrophysics

Astronomy

Techniques: Imaging Spectroscopy

Scientific paper

Solar observations would benefit from simultaneous imaging and spectroscopy. To approach in an optimal manner such an ideal goal we have designed and built in THEMIS a spectro-imager based upon the concept of subtractive double pass through a diffraction grating spectrograph called TUNIS. In its basic design it produces an image at a wavelength which changes linearly in one of the directions of the image. To improve the simultaneity of the spectral coverage, we have implemented a spectral multiplexing, based upon Hadamard spectroscopy. We present the first observations of TUNIS and give the main specifications. TUNIS has been proposed for the European Solar Telescope (EST) project.

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