Mike, the conditions of entry are clear:
9. Entries that combine images from professional observatories, taken by professional astronomers, for purposes other than creating the entry in question (e.g. the Digital Sky Survey), will be disqualified.
So you cannot
reuse image that was done for another purpose, or done by a professional astronomer as a part of e.g. study or thesis or somesuch.
But those images were collected, stacked and processed by ME, and have not been used for any other publication, scientific study or anything similar.
I did share them with many of my mates of course, this kind of bragging rights doesn't come too often
