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As part of the EU FP7 project SOLARNET, we are developing a prototype of a
new type of imaging spectrograph for solar observations. The Microlensed
Hyperspectral Imager (MiHI), consists of a double microlens array, that is able to
produce an array of point sources, suitable for dispersion by a spectrograph, but
without spoiling the pupil image on the grating, without scanning and without
masking. The instrument will be intrinsically very photon-efficient, and will be
able to record high-cadence spectral and image information strictly simultaneously
over a 7x7 arcsec FOV. A prototype of this instrument, containing 128x128 image
elements and 324 spectral elements per image element, is currently under
construction. |
