That's a very fine set of images Clive!
Nice colour and good resolution. My favorites are 6559 closely followed by the Helix. You should be happy with the neb extension on the Helix - it's more than you see in most other renditions! I love the mix of reflection and emission nebs in 6559 - nicely processed. In fact it's my next target once the moon goes away. Nice obs pic as well - love the "ceiling"!
Cheers, Marcus