l ▁on ▁ 2 0 ▁August ▁ 1 9 6 2 , ▁John ▁Ber tr and ▁Harris , ▁who ▁had ▁been ▁Sp ig l ' s ▁assistant ▁since ▁ 1 9 5 7 , ▁became ▁the ▁fourth ▁Government ▁Astronom er ▁of ▁the ▁Per th ▁Observ atory ▁between ▁ 1 9 6 2 ▁until ▁the ▁end ▁of ▁ 1 9 7 4 . ▁Harris ▁had ▁to ▁step ▁in ▁to ▁the ▁position ▁of ▁Government ▁Astronom er ▁at ▁a ▁time ▁when ▁the ▁Per th ▁Observ atory ▁was ▁on ▁the ▁move ▁to ▁its ▁new ▁site ▁in ▁the ▁Dar ling ▁Range , ▁B ick ley , ▁some ▁ 2 4   km ▁east ▁of ▁its ▁original ▁position ▁in ▁the ▁City ▁of ▁Per th . ▁Clear ing ▁of ▁the ▁land ▁in ▁the ▁State ▁For rest ▁in ▁B ick ely ▁comm enced ▁in ▁February ▁ 1 9 6 4 , ▁with ▁exc av ations ▁comm encing ▁in ▁May ▁ 1 9 6 4 ▁and ▁construction ▁works ▁on ▁buildings ▁continu ing ▁through ▁ 1 9 6 5 ; ▁staff ▁moved ▁in ▁on ▁ 1 9 ▁December ▁ 1 9 6 5 . ▁ ▁With ▁the ▁new ▁B ick ely ▁site ▁complete , ▁in ▁ 1 9 6 7 , ▁Harris ▁o vers aw ▁the ▁installation ▁of ▁a ▁mer id ian ▁circle ▁teles cope ▁at ▁the ▁Observ atory ▁as ▁part ▁of ▁an ▁expedition ▁by ▁astronom ers ▁from ▁the ▁Hamburg ▁Observ atory ▁in ▁Germany . ▁The ▁expedition ▁worked ▁on ▁the ▁international ▁Southern ▁Reference ▁Stars ▁program ▁that ▁resulted ▁in ▁a ▁re vised , ▁larger