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. 1999 Apr 13;96(8):4236–4239. doi: 10.1073/pnas.96.8.4236

Figure 2.

Figure 2

Figure 2

(Left) CLASS B1608 + 656 VLA image at 8.46 GHz. (Right) CLASS B1608 + 656 HST WFPC2 image. Note the Einstein ring due to lensing of extended background galaxy emission, as well as the binary nature of the lensing galaxy. Images courtesy of CLASS.