Hi Chris,
My only tip (as I dont do deep sky stuff) is to post a bit more of an interesting title, which might encourage more people to click on it and take a look in the first place.
I have found that quirky or interesting titles tend to stand out in the new or today's post lists and therefore I seem to gravitate to those posts. I suppose its a bit like advertising your product too.
That said, it is a nice image and one to be proud of. Yes, it does get disappointing when you see 4 pages of posts discussing other's pics and no replies to your own even when there has been a lot of views, but I think sometimes, the poster's personality, humour and a bit of humility when it comes to critiques or other's comments may be the difference here.
Sometimes, I even gravitate to newbie's posts on DSO and Solar system as it helps me understand the path I may be taking soon and almost ALWAYS shows an improvement which I can follow and even reproduce with the assistance of the constructive comments posted by others.
Certainly posts from Duncan (Toryglen-Boy), who by his own admission is relatively a newbie, are improving out of sight very quickly and by following his progress, I can gauge his improvements and techniques he follows, which in turn helps me, and ultimately brings me enjoyment too, as I feel more impressed each time he posts a better image.
So, bottom line, be open to criticism, tips, help offered and also take as much notice of the observations of others, no matter what background or bankroll they have. If you get no comments, this too, speaks volumes on some level, so maybe, try a different tack next time.
Sorry, waffled on a bit after all, but I tend to do that a lot.
Cheers
Chris