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Interferometer-grating spectrograph for high resolution astronomical spectroscopy in the middle uv.
Applied Optics
|March 6, 2010
Summary
A new high-resolution spectrograph enables ultraviolet astronomical spectroscopy from a balloon platform. It achieves spectral resolving power greater than 10^5 using a Fabry-Perot interferometer and grating.
Area of Science:
- Astronomy and Astrophysics
- Optical Physics
Background:
- Ultraviolet (UV) astronomical spectroscopy requires high spectral resolution for detailed analysis.
- Balloon-borne platforms offer stable, above-atmosphere observing conditions for specialized instruments.
Purpose of the Study:
- To describe a novel high-resolution spectrograph designed for UV astronomical spectroscopy.
- To detail the instrument's capability for achieving high spectral resolving power from a balloon platform.
Main Methods:
- Development of a spectrograph utilizing an optically contacted Fabry-Perot interferometer.
- Implementation of crossed dispersion with a grating order sorter to enhance spectral resolution.
- Integration of the spectrograph onto a moderately stabilized, star-pointing balloon-borne platform.
Main Results:
- Achieved a spectral resolving power greater than 10^5.
- Demonstrated the feasibility of high-resolution UV spectroscopy from a balloon platform.
- The instrument design combines interferometry and grating techniques for superior performance.
Conclusions:
- The described spectrograph is a capable instrument for advanced UV astronomical observations.
- The combination of a Fabry-Perot interferometer and grating provides exceptional spectral resolution.
- Balloon-borne platforms are suitable for deploying high-resolution spectroscopic instruments for astrophysical research.
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