Abstract
The Michelson Doppler Imager is an instrument for doing helioseismology from Lagrangian point between the Earth and Sun. It is a full sun imager that includes 12 cm refractor, a high speed image stabilization system, a narrowband filter system (Ni 6768 angstroms), and a 1024 × 1024 CCD detector. One hundred milliangstrom spectral analysis is provided by a combination of dielectric filters, a fixed Lyot filter, and a pair of tunable solid Michelson interferometers.
© 1991 Optical Society of America
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