Abstract

We present the design of a novel anamorphic integral field spectrometer for diffuse ultraviolet astronomy. The system is designed to be able to measure emissions from faint diffuse astrophysical sources across a large field with good spectral resolving power. The design uses a standard focal plane image slicer and an anamorphic relay mirror and spectrometer to achieve an exceptional area, field of view, resolving power ($A\mathrm{\Omega }R$) product, the key figure of merit for a spectroscopic system intended to study line emission from extended or diffuse sources. We present a typical design with $R\sim 1000$ and an effective etendue ($A\mathrm{\Omega }$) of $1.5\times {10}^{-4}{\mathrm{cm}}^2\mathrm{sr}$.

© 2013 Optical Society of America

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