This difference was catastrophic, introducing severe spherical aberration, a flaw in which light reflecting off the edge of a mirror focuses on a different point from the light reflecting off its center.The effect of the mirror flaw on scientific observations depended on the particular observation--the core of the aberrated PSF was sharp enough to permit high-resolution observations of bright objects, and spectroscopy was largely unaffected.. 
ÌGBÀ di ẹ́ lẹ́yìn ìgbà tí o fi ọwọ́ sí iṣẹ́kúpa Stefàní, paalú ń rin ìrìn àjò lọ sí Dámásíkù láti wá àwọn Kristẹni àti láti “Kó wọn ní idẹ wá sí Jerusalẹmu”(ES).. 