Ooohhhh!

https://www.legacysurvey.org//viewer/?ra=38.2078&dec=-3.3906&layer=hsc-dr2&zoom=16

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That’s a beauty! Published in 2013

Amazing! Do we see a near full “halo” because the near galaxy is essentially directly in line with the Earth and the further galaxy?

Yes. This one is almost perfectly aligned, and the mass distribution is effectively like a single point mass, so the lensing is almost perfect (i.e. like a telescope, not like the bottom of a beer glass!)

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