[Carl]

Thanks for the replies.
1. Polar alignment: Ive done a 10min test and my star doesnt move move from the centre of my reticle.
2. Focus: wasn't concerned with focus, this was just a test the rotating stars on the edge corners.
3. Length to camera from reducer: Ive tried it at around 50mm and at 100mm. Streaks just as bad. The only difference was that at 100mm i gained a slightly wider field of view.
If my scope was not aligned properly wouldn't the length of the streaks increase in distance with a longer exposure? At 4 different exposures, 30sec, 1min, 2min, 3min the streaks are exactly the same length.

Any ideas appreciated