I'm finally getting to use my skywatcher Star Adventure 2i tonight. I'm using it with my Astro- Tech 70 mm Apo and my new ZWO ASI 178 MC. It is not a cooled camera but it is cold enough outside that not a lot of hot pixels are building on the image. That image is 100X15 sec , 50X30sec and 50X2sec for 52 minutes of m42 and running man. On a Sky-Watcher Star Adventure 2i, acquired and polar aligned with Sharp Capture Pro. No calibration frames