New x-ray telescope design

Martina Atanassova; James E. Harvey

doi:10.1117/12.519499

4 November 2003 New x-ray telescope design

Martina Atanassova, James E. Harvey

Proceedings Volume 5226, 12th International School on Quantum Electronics: Laser Physics and Applications; (2003) https://doi.org/10.1117/12.519499
Event: 12th International School on Quantum Electronics Laser Physics and Applications, 2002, Varna, Bulgaria

Abstract

The Solar X-ray Imager (SXI) is a complimentary, add-on instrument designed for use on the next generation of Geostationary Orbiting Environmental Satellites (GOES). Its primary mission is to continuously observe the full solar disc at X-ray wavelengths; including coronal holes, active regions, flares, and coronal mass ejections. For wide-field imaging applications, there is little merit in an optical design exhibiting stigmatic imaging on-axis; we therefore departed from the classical Wolter Type I design in favor of a hyperboloid-hyperboloid design that balances not only defocus with field curvature but also third-order spherical aberration and astigmatism with oblique spherical aberration. A detailed system engineering analysis including the substantial surface scattering and detector effects indicates that the resulting hyperboloid-hyperboloid design will achieve an 80% increase (over the baseline design) in the number of spatial resolution elements (and hence in total information content in the image) over an 18 arc min radius field-of-view. A comparison of performance predictions with X-ray test data for the SXI Engineering Model is included.

Citation Download Citation

Martina Atanassova and James E. Harvey "New x-ray telescope design", Proc. SPIE 5226, 12th International School on Quantum Electronics: Laser Physics and Applications, (4 November 2003); https://doi.org/10.1117/12.519499

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