The GPU-based High-order adaptive OpticS Testbench
The GPU-based High-order adaptive OpticS Testbench (GHOST) at the European Southern Observatory (ESO) is a new 2-stage extreme adaptive optics (XAO) testbench at ESO. The GHOST is designed to investigate and evaluate new control methods (machine learning, predictive control) for XAO which will be re...
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Zusammenfassung: | The GPU-based High-order adaptive OpticS Testbench (GHOST) at the European
Southern Observatory (ESO) is a new 2-stage extreme adaptive optics (XAO)
testbench at ESO. The GHOST is designed to investigate and evaluate new control
methods (machine learning, predictive control) for XAO which will be required
for instruments such as the Planetary Camera and Spectrograph of ESOs Extremely
Large Telescope. The first stage corrections are performed in simulation, with
the residual wavefront error at each iteration saved. The residual wavefront
errors from the first stage are then injected into the GHOST using a spatial
light modulator. The second stage correction is made with a Boston
Michromachines Corporation 492 actuator deformable mirror and a pyramid
wavefront sensor. The flexibility of the bench also opens it up to other
applications, one such application is investigating the flip-flop modulation
method for the pyramid wavefront sensor. |
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DOI: | 10.48550/arxiv.2411.05408 |