What specialized technique did scientists develop to boost image resolution beyond the detector's native pixel size for the Deep Fields?

Drizzling, involving minutely varying the telescope's pointing direction between exposures.

Achieving maximum resolution from the collected photons required sophisticated data processing techniques beyond simple image addition. The team developed a specific method called 'drizzling' to enhance the final image quality beyond what the detector's inherent pixel size would normally allow. This involved carefully and minutely varying the telescope's pointing direction slightly between each of the hundreds of individual exposures taken. By slightly shifting the aim for every shot, the light from a single point source was spread across multiple pixels across the sequence of images. When these shifted images were then combined, the drizzling algorithm could interpolate the data to produce a final image with improved spatial resolution.