[AJames]

I seems to me you have two choices.

Submit your images under their rules (however distorted) or just not enter the competition.
Reading this seems there is far more at stake - akin to be more like the shabby competition for Miss World - and all the machinations that THAT entails - than among amateur astronomers doing their best all mostly producing absolutely significant wonderful works.
IMO I think that the judges of the images are just after original works by Imagers. Submissions are obviously to be judged impartially, among at least the entries they received - and how they were obtained.
Frankly, I would be more far impressed with good images taken in a homemade 10.5cm telescope and camera, than someone who has all the (expensive) bells and whistles available to take the images.
Frankly, I have been far more impressed with the Imagers in IIS and their works, than any mere competition made by an unknown selection of their presumed peers. If I had the money, I'd give everyone who presents an image $1000 bucks, for the pleasure I get is viewing excellent images by seemingly dedicated and quality amateur photographers for FREE.

It should be all about non-monetary pride and personal achievement.

As one who doesn't have the opportunity to undertake such endeavours...
Regardless.
Mes' Tips My Lid to You...