Magnificient lenses

https://www.legacysurvey.org//viewer/?ra=197.8743&dec=-1.3399&layer=hsc-dr2&zoom=14&desifoot=68.1173,-62.6387

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the magnificent Abell 1689…I believe this is where gravitational arcs were first identified in 1986…it’s certainly the most extensive assemblage of lenses yet observed

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VLASS for Abell 1689

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