HiTIES: A high throughput imaging echelle spectrograph for ground-based visible airglow and auroral studies

Physics

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Atmospheric Composition And Structure: Airglow And Aurora, Atmospheric Composition And Structure: Instruments And Techniques, Ionosphere: Equatorial Ionosphere, Ionosphere: Instruments And Techniques

Scientific paper

We describe an imaging spectrograph with high spectral resolution (0.3 Å) that uses an echelle grating without the conventional cross disperser. The spectrograph covers the entire visible region. However, only 5-20 wavelength regions can be observed simultaneously. The total wavelength coverage is limited by the number of available pixels on the detector and for a 1024×1024 pixels detector is ~100-300 Å. Order separation is achieved by a mosaic of interference filters located at the image plane.

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