I have always wanted to be able to process an image of these strange objects, but as expected Navi Cassiopeia [gamma Cassiopeia] would be an issue, like Alnitak in Orion. Stretching the object blew out the nebulae, so I had to gradually do things, and I had to be inventive with some range selection masks and a further blurring of them, in order to reduce the overbearing brightness of this star. All in all I am pretty happy with it; I am not sure if I have things right, but it is all I can do for now.
Thanks everyone…
Pier 5 uses a Takahashi Epsilon 180 F/2,8 astrograph, on a Skywatcher EQ 8 mount with a ZWO ASI071 Pro Colour CMOS camera. This image was 120 subs at 60s each, an integration time of 2 hours.