▁head ▁of ▁the ▁UK ▁Schmidt ▁T eles cope ▁in ▁Australia ▁and ▁of ▁the ▁Isaac ▁Newton ▁Group ▁of ▁teles cop es ▁in ▁the ▁Can ary ▁Islands . ▁In ▁ 1 9 8 7 , ▁he ▁returned ▁to ▁the ▁Royal ▁Green wich ▁Observ atory ▁and ▁moved ▁with ▁them ▁to ▁Cambridge ▁in ▁ 1 9 9 0 , ▁where ▁he ▁became ▁head ▁of ▁the ▁Astronom y ▁Division . ▁He ▁took ▁early ▁ret irement ▁in ▁ 1 9 9 7 . ▁Between ▁ 1 9 9 5 ▁and ▁ 2 0 1 1 ▁he ▁was ▁an ▁Associ ate ▁L ect urer ▁in ▁astronom y ▁and ▁planet ary ▁science ▁with ▁the ▁Open ▁University . ▁ ▁He ▁is ▁the ▁discover er ▁of ▁com et ▁ 1 5 7 P / T rit ton . ▁ ▁The ▁astero id ▁ 4 6 4 4 2 ▁Keith tr it ton ▁is ▁named ▁after ▁him . ▁ ▁Cont ribution s ▁About ▁ 4 0 ▁papers ▁in ▁observ ational ▁astronom y , ▁particularly ▁in ▁optical ▁monitoring ▁of ▁qu as ars , ▁optical ▁identification ▁of ▁radio ▁sources , ▁optical ▁instrument ation ▁and ▁astronom ical ▁phot ography . ▁ ▁Books ▁ ▁Low ▁Light ▁Level ▁Det ectors ▁in ▁Astronom y , ▁with ▁M ▁J ▁E cc les ▁and ▁M ▁Elizabeth ▁Sim ; ▁Cambridge ▁University ▁Press ▁ 1 9 8 3 , ▁ ▁and ▁( in ▁Russian ) ▁Mir ▁Mosk va ▁ 1 9 8 6 . ▁ ▁Earth , ▁Life ▁and ▁the ▁Un iverse : ▁Ex pl oring ▁Our ▁Cos mic ▁An c est ry ;