New Imaging Spectrograph Eliminates Astigmatism

The new IsoPlane imaging spectrograph from Princeton Instruments is changing the way the world sees spectroscopy. Unlike existing Czerny-Turner designs, IsoPlane eliminates field astigmatism and greatly reduces coma, enabling crisp, detailed imaging across a 27 x 8 mm focal plane. With the IsoPlane spectrograph more photons end up in the peak, increasing the height and effective signal-to-noise ratio (SNR), rather than in the wings, where they contribute to the background noise. The IsoPlane yields near-Lorentzian spectral lines at the center of the focal plane, whereas Czerny-Turner spectrographs deliver inferior line shapes. Deter the blur with IsoPlane!