Data.
40x30s of each of RGB
50x4 min of each of RGB
I used the green stacked image of the 30s data to align the 4 min data. Drizzle was used x2 for both data sets.
PixInsight was used for all processing. I even worked out how to use the HDR composition tool to put the 30s and 4 min data together.
Full size drizzled HDR image 30MB
http://d1355990.i49.quadrahosting.co...M42_PI_HDR.jpg
The optic train was not as stable and well aligned as it is now when this data was recorded.
PI tells me that this image has a dynamic range of a little over 19 bits.
Bert