Ingo, you have a sweet way of endearing yourself to us.
I'm not sure why you say that readers of a southern forum who mostly live south of the equator would be able to identify Northern Hemisphere DSOs?
However, I'm sure there are some that could, if you made it easier (and perhaps said "please"?). Unfortunately, it won't be me - I don't have the knowledge.
Perhaps if edited your post to 1) add a small version of the whole image as an attachment, and maybe a crop of the object in question, to attract interest, and 2) told us exactly what "VERY LARGE" and "BIG" meant (sounds like Gigabytes of file!), then people would know whether to click and download.
Eric