System 300 is a second two stage imaging system that compensates for {HEAD ~ the curvature} of {TAIL ~ field aberration} 
of
System 300 is a second two stage imaging system that compensates for { HEAD ~ the curvature } of { TAIL ~ field aberration }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL