Tẹ́lískópù Òfurufú Hubble: Ìyàtọ̀ láàrin àwọn àtúnyẹ̀wò

Existing ground-based telescopes, and various proposed [[Extremely Large Telescopes]], can exceed the HST in terms of sheer light-gathering power and diffraction limit due to larger mirrors, but other factors affect telescopes. In some cases, they may be able to match or beat Hubble in resolution by using [[adaptive optics]] (AO). However, AO on large ground-based reflectors will not make Hubble and other space telescopes obsolete. Most AO systems sharpen the view over a very narrow field—[[Lucky imaging|Lucky Cam]], for example, produces crisp images just 10" to 20" wide, whereas Hubble's cameras are super sharp across a 2½' (150") field. Furthermore, space telescopes can study the heavens across the entire electromagnetic spectrum, most of which is blocked by Earth's atmosphere. Finally, the background sky is darker in space than on the ground, because air absorbs solar energy during the day and then releases it at night, producing a faint—but nevertheless discernible—[[airglow]] that washes out low-contrast astronomical objects.<ref name="Fienberg">{{cite web |last= Fienberg |first= Rick |title= Sharpening the 200-Inch |publisher= Sky and Telescope |date=September 14, 2007 |url= http://www.skyandtelescope.com/news/9785152.html |doi = |accessdate=July 1, 2008 |archiveurl=https://archive.is/7qQD|archivedate=September 10, 2012}}</ref>