Interacting galaxies NGC 6872 (the big one) and IC 4970 (the small one). This is one of those woeful cases where large black boxes of missing data are present. You can see a more complete view of the pair here on the Wikipedia page. There should be a nice big image by the ESO there.
Hubble data is public domain, but I put a lot of work into combining it into beautiful color images. The minimal credit line should read: NASA / ESA / J. Schmidt
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