I came out observing 23/24. Dec-2015, and once again I tried the M42 center part using narrowband filters,
The picture was taken with a LX200ACF 16" scope and a Atik 460ex mono camera. I used Baader NB filters, R=SII, G=Ha and B=OIII. Total exposure time was ~0.5hours. Sub-exposures from 2sec to 30sec.
Another color combination is here,
The SII master is here,
The Ha master is here,
The OIII master is here,
Thanks for looking.
Kind regards Niels