From Event: SPIE Optical Engineering + Applications, 2017
The Transiting Exoplanet Survey Satellite (TESS) is an instrument consisting of four, wide fieldof- view CCD cameras dedicated to the discovery of exoplanets around the brightest stars, and understanding the diversity of planets and planetary systems in our galaxy. Each camera utilizes a seven-element lens assembly with low-power and low-noise CCD electronics. Advanced multivariable optimization and numerical simulation capabilities accommodating arbitrarily complex objective functions have been added to the internally developed Lincoln Laboratory Integrated Modeling and Analysis Software (LLIMAS) and used to assess system performance. Various optical phenomena are accounted for in these analyses including full dn/dT spatial distributions in lenses and charge diffusion in the CCD electronics. These capabilities are utilized to design CCD shims for thermal vacuum chamber testing and flight, and verify comparable performance in both environments across a range of wavelengths, field points and temperature distributions. Additionally, optimizations and simulations are used for model correlation and robustness optimizations.
Gerhard P. Stoeckel and Keith B. Doyle, "Using multi-disciplinary optimization and numerical simulation on the transiting exoplanet survey satellite," Proc. SPIE 10371, Optomechanical Engineering 2017, 103710J (Presented at SPIE Optical Engineering + Applications: August 10, 2017; Published: 23 August 2017); https://doi.org/10.1117/12.2275277.
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