Initial findings in full-shell, active optics

Jacqueline Davis; Stephen Bongiorno

doi:10.1117/12.2593250

9 September 2021 Initial findings in full-shell, active optics

Jacqueline Davis, Stephen Bongiorno

Proceedings Volume 11822, Optics for EUV, X-Ray, and Gamma-Ray Astronomy X; 1182210 (2021) https://doi.org/10.1117/12.2593250
Event: SPIE Optical Engineering + Applications, 2021, San Diego, California, United States

Abstract

The realization of active full-shell x-ray optics will provide groundbreaking capability for future missions. Future X-ray missions, such as Lynx, require high angular resolution, large effective area, and as wide a field of view (FOV) as possible. It is currently not possible to perform high-resolution imaging of both wide and narrow FOVs with a single X-ray telescope. In this paper, we discuss the use of actuators to switch the optical surface of full shell x-ray optics between prescriptions optimized for narrow-field and wide-field viewing, as well as correct for low-spatial-frequency errors in the optics. Previously, a pathfinder was developed using finite-element modeling (FEM). Using a combination of the model’s influence functions, the capacity of active full-shell optics was shown to switch between prescriptions with high accuracy. The analytical pathfinder also demonstrates the capability to correct low-spatial frequency errors, which comprise a large percentage of the MSFC full-shell x-ray optics root-mean-square (RMS) slope error. In order to verify the pathfinder, a surface-parallel actuator was bonded to a nickel-replicated coupon. After the actuator was bonded to the coupon, the slope of the surface was measured while the actuator was activated. The proof-of-concept demonstrator development, the influence function data, and the resulting implications on the analytical pathfinder are reported and discussed.

Conference Presentation

Citation Download Citation

Jacqueline Davis and Stephen Bongiorno "Initial findings in full-shell, active optics", Proc. SPIE 11822, Optics for EUV, X-Ray, and Gamma-Ray Astronomy X, 1182210 (9 September 2021); https://doi.org/10.1117/12.2593250

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