I wish I knew how without killing the resolution!
Anyway, blame Simon - I went and redid it, AGAIN, and did change the core to show the Trapezium - hopefully, it looks passable. I love the way the dust popped this time!
http://img195.imageshack.us/img195/638/m42redux2.png
Make sure the link image is at FULL size, otherwise it looks out of focus