In the imaging standby state, the quick return {HEAD ~ minor} 6 inside the minor box 5 is retained at {TAIL ~ an angle} of 45 degrees—to the optical axis L 
In the imaging standby state , the quick return { HEAD ~ minor } 6 inside the minor box 5 is retained at { TAIL ~ an angle } of 45 degrees — to the optical axis L
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH