Fig. A.2.
Example image. Shown is the case of a Schwarzschild black hole (a* = 0). The observer inclination i is 20 deg. θoffset = 1 rad, rring = 6 rg. Note the double image of the lower ring, which appears larger in size than the upper ring due to lensing. The doubled image of the lower ring appears close to the photon ring, but is slightly larger.
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