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Which digital surveys replaced photographic sky surveys such as Palomar Observatory Sky Survey-II?

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Astronomical map Star trails over banksia trees, in Gippsland, Vic., Austl. The south celestial pole, located in the constellation Octans, is at the centre of the trails.

The Palomar Observatory Sky Survey-II, which served as the final photographic sky survey, has been superseded by digital sky surveys. The primary digital surveys that replaced these photographic efforts include:

The Sloan Digital Sky Survey, which utilized a 250-cm telescope located at the Apache Point Observatory in New Mexico.
The Two Micron All Sky Survey, which employed two 130-cm telescopes situated at the Cerro Tololo Inter-American Observatory in Chile and Mount Hopkins in Arizona.1

These transitions reflect a broader shift in astronomy where traditional photographic plates have been largely replaced by charge-coupled devices (CCDs). Electronic detectors offer significant advantages over photography, including higher sensitivity, the ability to record a wider range of light levels, and the capacity to observe across a broader spectrum of wavelengths.2