Marked as lens
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by JasonJason
center with faint arc top and left
similar examples from SL2S-Arcs summary table http://kicp.uchicago.edu/~anupreeta/sarcs_sample
Posted
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by AlexandredOr
All these, and yours, seem to be excellent lenses 😃
Posted
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by JasonJason
How could those examples seem to be when they are?
Posted