But last night did a session of 300 x 35 seconds and there is a lot of background noise/pattern. No streaks but a kind of ripple/small wave effect.
Not with the Live Stack feature because it never worked for me: there are just not enough stars in view. Only after processing those come up.
But this is either because my camera is not-cooled or because I do not dither. Most likely because of a combination of those
![Wink ;)](./images/smilies/icon_e_wink.gif)
But wouldn't a kind of manual dithering help? Like doing 5 captures, pause, slew the scope a tiny fraction, capture, slew, and so on.
Here a small exaggerated example of the pattern I get.