Astronomy and Astrophysics – Astrophysics
Scientific paper
May 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992esasp.344..191t&link_type=abstract
In ESA, Solar Physics and Astrophysics at Interferometric Resolution p 191-195 (SEE N93-10901 01-90)
Astronomy and Astrophysics
Astrophysics
1
Design Analysis, Fourier Transformation, High Resolution, Imaging Spectrometers, Solar Spectrometers, Emission Spectra, Lyman Spectra, Signal To Noise Ratios, Spatial Resolution, Spectral Resolution, Ultraviolet Radiation
Scientific paper
The IFTS in SIMURIS (Solar Interferometric Mission Ultrahigh Resolution Imaging and Spectroscopy) is described. IFTS is an imaging spectrometer designed to combine two dimensional spatial resolution with high spectral resolution over a scan time of a few seconds. This is done by forming an image of the entrance aperture on an array detector at the output of a scanning interferometer. Each pixel of the detector records an independent interferogram, which can then be Fourier transformed to give the spectrum. The principles, design, problems, and projected performance of IFTS with respect to the SIMURIS objectives, primarily in the wavelength region from 1800 A to Lyman alpha, but also with an alternative mode of operation at increased spectral resolution in the visible region are discussed.
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