First go at andromeda

[Dr Dixon]

Ok not in the same league as Olly's superb image, this is my first attempt at Andromeda

C ED80, Cannon 40D, 40 x 45 sec subs @ ISO 800, 2 Darks.

I am assuming that the diagonalish noise running from top left to bottom right was due to shooting through high thin cloud which was blowing across in that direction and picking up light from london? does that sound correct?

At some point i will also have to start thinking about flats as on this image Dynamic Background extraction didnt seem to work so well, any good easy to follow guides about which explains how to take flats ?

Any comments welcome...now all i need is another 10 1/2 hours worth of data