An Itek mirror built as part of the effort is now used in the 2.4 m telescope at the Magdalena Ridge Observatory.Construction of the Perkin-Elmer mirror began in 1979, starting with a blank manufactured by Corning from their ultra-low expansion glass.. 
Jijẹ aLodi tabi àìlódiwọ̀n jẹ ohun ini nọmba kan to jẹ gidi, tabi ara ọmọakojọpọ awọn nọmba gidi bi awọn nọmba onípìn ati odidi.nọmba alodi ni awọn nọmba tiwon ju ọdọ lo fun apẹrẹ ọlọdays -1.44, -1.. 