This is very very very hard to capture. More time and number of exposure than normally I am doing... and

almost nothing !
GSO 305 mm - Canon T3 - ISO 400 - 15 x 5 min - 1 h 25 min - OAG - Skyglow filter - Coma Corrector
A good image can be seen at
http://tas.astroshots.net/Pingley%20...12%20Page.html and
http://www.atnf.csiro.au/people/bkoribal/ngc1512/