Hi, I use to use ACP along time ago, so I am thinking I need to upgrade to ACP 8.3 and perhaps Scheduler as well. Please remind me why I need Maxim DL? I now use TheSkyX for everything and currently CCDAP. I am planning to move my observatory about 300 miles from me and CCDAP may not be up to the task. My mount is a SB Paramount ME.