Its three Fine Guidance Sensors (FGS) are primarily used to keep the telescope accurately pointed during an observation, but can also be used to carry out extremely accurate astrometry; measurements accurate to within 0.0003 arcseconds have been achieved.Ground support The Space Telescope Science Institute (STScI) is responsible for the scientific operation of the telescope and delivery of data products to astronomers.. 
Bach fi weimar sílẹ̀ àti ní ààbò iṣé kan ní Oṣù kejìlá ọdún ooreju bí ẹ̀sìnll ní Cothen.. 