[JohnH]

Here is my first go with this filter, I struggled to find the right colour balance I will have to calibrate against a known (white) source in future. Also my alignmenat was way off as this was my first run after the observing session so I had to re-assemble and re-align everythingn...

Here it is - the tranatula - comments on processing with filters welcome. It is 20*3 mins with in camera NR on. I have some hot pixel problems which I do not understand that has prevented me pushing for the faintest details.