This has happened with isolated images in my past two submissions.  I've been cropping them pretty tight with the understanding that customer don't want to pay for a lot of null space.  It's a simple thing to add some back and even compose them in accordance with the "Rule of Thirds", if that's what they really want, but it seems a bit silly to do that with images designed to be raw material cut outs for someone else.   Has anyone else been getting rejections like these lately?

I'm curious if anyone here regularly submits starscapes to mircostock and if so, is there a common practice for handling the noise associated with this type of photography? 

I have several shots to submit of the night sky employing long exposures at high ISO (settings selected specifically to avoid generating star trails).  Given the heavy handedness most sites have against noise, I've been hesitant to upload them.

I generally loathe using Noise Reduction on shots like this because it will mute or obliterate the smaller more distant stars in the process, and seems to invariably turn the milky way in to the mushy way when viewed at 100%.  I do however, recognize that this attitude towards NR may just be my own personal bias, so am wondering what others opinions are.

Thanks in advance for any comments or suggestions.