Hi all - Thanks again for looking and comments - any constructive comment is helpful - I have reprocessed the image - tightened up the stars a little and cleaned up and toned down the background - I have also tried to correct the blue stars colour and removed a slight green cast from the whole image - anything else will have to wait until I can upskill myself with Photoshop.
Enjoy
http://www.pbase.com/loc46south/image/110428907
Thanks
Geof