Show Star Photography Aided by Aluminum Reflectors Pasadena Calif Opening Opening up new worlds astronomers astronomer at Lick observatory tory tort have bave found that the use of aluminum aluminum num Instead of ot sliver silver In the mirror of Qt an astronomical telescope Increases the Instruments Instrument's power possibly GO ro to toGO 60 GO per ler cent After photographing a star In tn the North r polar region with a telescope whose mirror was coated with sliver the astronomers sent the mirror to the California Institute of ot Technology where the sliver silver was removed and polished pol pol- aluminum applied applied- The star Itar was and a long extension extension ex ex- tension of the stars star's spectrum barel barely visible In the former photograph could be seen leen plainly The effect will w be to widen former astronomical horizons scientists are ore greed agreed |