Gregory, a very impressive result from your set up. Was this guided by hand or have you also attached a motor to your home made EQ mount? I downloaded your image to my phone and stretched it a bit to find a lot of detail you have clipped with your processing. I reduced the exposure, played with the levels and increased the saturation to reveal some very good data amongst those 200 X 8 sec subs. Stars are a little eggy but at 1250mm of focal length I would expect it to very difficult to keep them round on a home made mount. Great effort on achieving this, keep up the good work!