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Just 10 recurrent novae (RNe) - which erupt repeatedly on timescales shorterthan one century - are known in our Galaxy. The most extreme RN known (locatedin the Andromeda galaxy), M31N 2008-12a, undergoes a nova eruption every year,and is surrounded by a vast nova "super-remnant", 134 pc in extent. Simulationspredict that all RNe should be surrounded by similar vast shells, but previoussearches have failed to detect them. KT Eri has recently been suggested to be aRN, and we have used the Condor Array Telescope to image its environs throughmultiple narrowband filters. We report the existence of a large ($\sim$ 50 pcdiameter), H$\,\alpha$-bright shell centered on KT Eri, exactly as predicted.This strongly supports the claim that KT Eri is the 11th Galactic recurrentnova, and only the second nova known to be surrounded by a super-remnant. SALTspectra of the super-remnant demonstrate that its velocity width is consistentwith that of M31-2008-12a.

Introducing the Condor Array Telescope: IV. A possible nova super-remnant surrounding the putative recurrent nova KT Eridani