This is 26x4 min of each of RGB. My observatory is only 16 km from Melbourne so I have to deal with light pollution. Gradients are the main pain.
Full res 5MB
http://d1355990.i49.quadrahosting.co...3_11/M42_N.jpg
With many more frames this image could be improved.
Here is the data as a 16 bit tiff to play with. It has only been corrected for flats and darks and aligned with RegiStar. 38MB
http://d1355990.i49.quadrahosting.co...13_11/M42_.zip
Bert