I sent a friend a low-res version of M31 and they asked if they could have the hi-res version to print out and put on their wall. Now it gets embarrassing – can’t find the hi-res version anywhere. So I have to go back to the original datasets (Sky90 and Hyperstar 4 data) composite them, completely reprocess them, and have another go. The result is above. Close to the original low-res version but not exactly the same.
