Complex sentence: The star tracker has poor spatial resolution, having been designed primarily for a wide field of view and detection of the brightest stars, however, it is above the atmosphere and thus avoids scintillation, enabling high-precision photometry.
Split into simpler sentences: The star tracker has poor spatial resolution, having been designed primarily for a wide field of view and detection of the brightest stars. However, it is above the atmosphere and thus avoids scintillation, enabling high-precision photometry.