This is the final version of the M101 image after incorporating Halpha data and reprocessing it from scratch.
The incorporation of Halpha data has been done according to the formulation (1) indicated here: Many thanks to Edoardo Luca for this precise and detailed tutorial!.
As
a difference with respect to that process, I have only added Ha data to
the red channel (none to the blue channel).
The
image accumulates 25 hours of exposure with L & Ha data acquired with STL
11000M and RGB data with Canon 60Da.
Simultaneous
and synchronized acquisition of images with two cameras by using AstroArt.
Observatory
automation and remote operation with Talon6.
Click on the image for full resolution version or go to the Gallery section for complete exposure details.
(1) The method is directly derived from Vicent Peris formula for composition of narrowband data with broad band data.
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