Einstein Cross
Videos
The Einstein Cross is a gravitationally lensed quasar that sits directly behind the centre of the galaxy ZW 2237+030, called Huchra's Lens. Four images of the same distant quasar appear in the middle
Einstein cross
Another lensed quasar, HE 0435−1223 in Eridanus, and its surroundings
Hubble Space Telescope captures Einstein Cross.
Cloverleaf quasar
Videos
The Cloverleaf quasar is a bright, gravitationally lensed quasar discovered by Hazard, Morton, Terlevich and McMahon in 1984. It receives its name because of gravitational lensing splitting the single
Einstein Cross
…The individual images are labelled A through D (i.e. QSO 2237+0305 A), the lensing galaxy is sometimes referred to as QSO 2237+0305 G. Cloverleaf quasar SN Refsdal…
ESO image of the Cloverleaf quasar
CCD image of the Cloverleaf quasar taken in March 1988 by the ESO/MPI 2.2m telescope. The four separated images are part of the quasar.