They are different CCD detectors. SBIG use to offer a service to change the detector on the ST cameras as the electronics is very similar between the cameras. You cant modify the chip from antiblooming to non antiblooming or visa versa.
The advantage ofthe NABC is the higher sensitivity and it is more useful for scientific applications like photometry.
You would be better off buying a new camera and keeping the ST8 for photometry
Terry
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