I have re-imaged M45 - this time I have about 2 hours of 1 minute exposures. I used my Nikon D5500 and my 135 f/2 lens but I stopped it down to 2.5. It seemed to help with the focusing, but looking at the image it seems like I still had some tracking issues. I changed from using Photoshop to PixInsight and while I spent a few days going through it I really enjoy the workflow so far. While I have a lot left to learn, I'm really enjoying the process so far! Criticisms and suggestions welcome!