Hi all re-shot the Pinwheel using HaLRGB mono.
12 hrs image time ZWO ASI2600MM Pro ZWO Filter wheel and Antlia 7nm Ha and LRGB Pro filters. 3.5h Ha, 2h B, 3h G and R.Askar 107Phq Flatfield Astrograph, aperture 107mm, focal length 749mm f7. Asiair PLus , ZWO AM5 and EAF
(http://gallery.orpington-astronomy.org.uk/albums/userpics/10110/normal_m101halrgbcroppub_001.png)
Very nice rendition. I've always wanted to pull out the Ha regions like you have. Is there a big version on the gallery?
That's excellent John, well done. I also have not had a lot of success adding Ha to target's like this, so double well done.