I finally got round to imaging this object, and this is the first time I have attempted to combine Ha and OIII all in the same RGB image. I am not sure about blending the OIII with the two separate G and B channels - I simply placed the same amount of OIII in each, which made the whole thing a bit too green for my liking, but I did not know that until I had got further along in the processing, and by that stage I did not want to go back and redo it! I then did some adjusting later, and have got it a bit better, but maybe there is a formula or method of how to mix the OIII with the G and B channels better and get a better blue hue? Anyway, that fact, at present, eludes me, and I only have so much head space to manage these things. Thanks everyone and have a good day...
Pier 7 is a William Optics FLT132 F5.6 APO, with a QSI 660-WSG Mono CCD camera, all on a Paramount MX mount. I was able to use from the data provided, 24 reds, 23 blues, 20 greens and 12 Has, and 43 OIIIs, each at 5 minutes long exposure time, and thus an integration time of 10 hours and 10 minutes.
And a slightly brighter one for those who prefer such things...