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In the recent past , Teare has worked with Laird Thompson of the University of Illinois on retrofitting the 83-year-old , 100-inch telescope at the Mount Wilson Observatory in Southern California with laser-guided star adaptive optics which compensate and correct for optical disturbances caused by atmospheric turbulence , allowing astronomers to do cutting-edge research on some of these older telescopes . Without it , scientists wouldn ’ t pass along the skills to do cutting-edge research on new topics . If you would like to do an essay on a topic that is not included below , then please speak with me . But Shel is a seaman , and when the wind changes , he must leave to do his duty on his ship . She blurted out , after she caught her breath from the half hour run , " I've got to do an essay on my favorite pastime what should I do ? You know America expects every man to do his duty on New Year 's Day . " Such instruments allow astronomers to do cutting-edge research on existing astronomical telescopes , " Teare says , " and will be a necessity on the 30 to 100 meter telescopes that are being planned , in order to take advantage of their available resolution . completely mystified i had to do another search on the net under the title and found myself with the same book , same content , same chapter index , only it was under a different author , Charlotte Mary Yonge .