I've never worried about anything but azimuth and that star two isn't too low. Polaris is my Star One, always, and Procyon and Fomalhaut take up the slack the rest of the year. Polaris and a star 90-degrees plus away in azimuth and I am ready to go. As I mentioned earlier, my Sky Commander has never gotten sluggish enough in the cold to worry about, but if it does, as was also mentioned earlier, power it with 12volts and an internal heater kicks in as needed. :-)