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Hi EzyStyles,
The last image you posted looks really good!
Understand what you mean by "auto exposure" now, thanks. I think everyone has hit on the important issues.
It is possible to get some results in astrophotography by manual tracking. There have been posts on IIS of the Orion nebula taken with webcams. With no tracking you can let the object drift through your field of view, take lots of pics and combine them in Registax. The DSI is not as suited to this kind of imaging, however, as it has a very slow 'frame rate' compared to the ToUCam, for example. Also, by manually operating the slow-mo knob you tend to jiggle the tube and cause funny star trails - I'll bet you have a few of those among your 1500+ shots!
With tracking, you can expose for longer without the stars trailing. Have you been able to get an RA drive motor for your mount?
Congratulations, again, on your image. For the conditions you are working under it is a great result.
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