▁and ▁for ▁an ▁attempt ▁to ▁rect ify ▁chrom atic ▁aber r ation ▁by ▁using ▁a ▁triple ▁e y eg lass ; ▁and ▁in ▁clock - making , ▁for ▁his ▁in vention ▁of ▁the ▁ill umin ated ▁d ial - plate , ▁and ▁that ▁of ▁no is eless ▁clock s , ▁as ▁well ▁as ▁for ▁an ▁attempt ▁to ▁correct ▁the ▁irregular ities ▁of ▁the ▁p end ul um ▁which ▁arise ▁from ▁variations ▁of ▁temperature . ▁Camp ani ▁published ▁in ▁ 1 6 7 8 ▁a ▁work ▁on ▁hor ology , ▁and ▁on ▁the ▁manufact ure ▁of ▁l enses ▁for ▁teles cop es . ▁ ▁His ▁younger ▁brother ▁Giuseppe ▁was ▁also ▁an ▁ingen ious ▁opt ician ▁( inde ed ▁the ▁attempt ▁to ▁correct ▁chrom atic ▁aber r ation ▁has ▁been ▁as cribed ▁to ▁him ▁instead ▁of ▁to ▁Mat te o ), ▁and ▁is , ▁besides , ▁not ew orth y ▁as ▁an ▁astronom er , ▁especially ▁for ▁his ▁discovery , ▁by ▁the ▁aid ▁of ▁a ▁teles cope ▁of ▁his ▁own ▁construction , ▁of ▁the ▁sp ots ▁in ▁Jup iter , ▁the ▁credit ▁of ▁which ▁was , ▁however , ▁also ▁claimed ▁by ▁E ust ach io ▁Div ini . ▁ ▁See ▁also ▁List ▁of ▁astronom ical ▁instrument ▁mak ers ▁ ▁Category : Ph il osoph ers ▁of ▁science ▁Category : S cient ific ▁instrument ▁mak ers ▁Category : Ital ian ▁clock m akers <0x0A> </s> ▁G ah an ▁Wilson ' s ▁The ▁Ult imate ▁Ha unted ▁House ▁is ▁a ▁computer ▁advent ure ▁game ▁developed ▁by ▁By