Mitigating the effects of pointing error for the TOLIMAN space telescope

The TOLIMAN space telescope is purpose-built to probe our stellar neighbourhood for potentially habitable Earth-like exoplanets. Our novel diffractive pupil design will allow TOLIMAN to detect extremely subtle changes in the positions of stars in binary systems, down to the microarcsecond scale. One of the many limiting factors in the detection of this diminutive astrometric signal is instability in the telescope pointing, such as jitter and wander. This work demonstrates the capability of mitigating the blurring effects of telescope jitter through a forward modelling approach and the use of a new piezo-driven tip/tilt system. This methodology enables us to recover crucial astrometric parameters despite telescope pointing instability, offering TOLIMAN the opportunity to observe exoplanetary signatures with unprecedented precision.