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arXiv · 2608.02963

The Space Coronagraph Optical Bench (SCoOB): 11. Modeling and correction of chromatic aberrations

Kyle Van Gorkom·Ramya M. Anche·Saraswathi Kalyani Subramanian·William Melby·Kian Milani·Emory Jenkins·Irina Stefan·Adam Schilperoort·Patrick Ingraham·Jaren N. Ashcraft·Kevin Derby·Daewook Kim·Heejoo Choi·Olivier Durney·Ewan S. Douglas
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Abstract

The space coronagraph optical bench (SCoOB) is a high contrast imaging testbed designed to demonstrate starlight suppression techniques at visible wavelengths in a space-like vacuum environment. Since the previous proceedings, the testbed has undergone major component upgrades, including a 100%-yield BMC Kilo-C deformable mirror, a black silicon pupil stop, and circular polarizers between wedged substrates. To assess the performance limits imposed by lateral chromatic aberration induced by refractive optical elements, we develop analytic and numerical tools to predict the broadband contrast. Additionally, we present the broadband contrast performance of the testbed using implicit electric field conjugation with multiple sensing bands for broadband control.

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Kyle Van Gorkom, Ramya M. Anche, Saraswathi Kalyani Subramanian, William Melby, Kian Milani, Emory Jenkins, Irina Stefan, Adam Schilperoort, Patrick Ingraham, Jaren N. Ashcraft, Kevin Derby, Daewook Kim, Heejoo Choi, Olivier Durney, Ewan S. Douglas. 2026-08-03. The Space Coronagraph Optical Bench (SCoOB): 11. Modeling and correction of chromatic aberrations. https://arxiv.org/abs/2608.02963

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