Wide-angle spectral imaging using a Fabry-Pérot interferometer M. Strauch, I. L. Livshits, F. Bociort and H. P. Urbach J. Eur. Opt. Soc.-Rapid Publ., 10 (2015) 15037 Published online: 12 July 2015 DOI: 10.2971/jeos.2015.15037