This time, I stacked multiple 1-minute shots to get rid of the noise and to get around periodic error. No internal (camera) noise reduction. No autoguiding (I will try webcam autoguiding soon) and no polar scope (yet). ISO 1600. I took 17 shots in total, and kept the best 12, which I then stacked in Registax. I tweaked each image a little using Canons software (I used digital exposure compensation of +2) and did some contrast and brightness adjusting using Microsoft Picture It 9.