Hi,
I have a whole bunch of data to process of M51 from the 18th, M51 for me has allways proved to be a nightmare to image, not because if the kit, but becaus something allways happens. For example this weekend the next door G*&T decided to burn rubbish all weekend etc.
Anyway, Wednesday was lovely and clear I had a couple of hours so I managed to get in 36 2 minute binned subs, of which 33 we're used for this image, the following day I applied the 40 2min darks to it and took some flats and flat darks. Its not brill, but here it is.
(http://www.deep-sky-photography.com/Trash/M51-L-20070418.jpg)
(http://www.deep-sky-photography.com/Trash/M51-L-20070418a.jpg)
I bet the air was blue with your neighbour & his bonfire, I had to chuckle!
Fay
Nicely done Chris, there is some very nice structure in those arms.