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DSS: digitized photographic plates. One quarter the diameter of the moon. Full sky available. Sloan Digital Sky Survey. 10% of sky done. Deep Lens Survey. 20 square degrees. LSST. LSST compared with DLS. Factor of 2 deeper Factor of 2 better angular resolution 6 colors
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DSS: digitized photographic plates One quarter the diameter of the moon Full sky available
Sloan Digital Sky Survey 10% of sky done
Deep Lens Survey 20 square degrees
LSST compared with DLS Factor of 2 deeper Factor of 2 better angular resolution 6 colors Entire visible sky (full hemisphere) 1000 times the area No artifacts (blooming, diffraction spikes)