With so many megapixels, binning could make such sensor quite versatile, for example 120mp at 450mm fl would be about optimal at 1arcsec per pixel, and when binned 2x2 it would work nicely at 30mp and 900mm fl, and binned 3x3 it would be a nice match for 1.5m fl and still give a respectable resolution in images with 13mp.
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