This is one beautiful instrument. The optics are superb. On double pass autocollimation the largest surface error was 1/10 wave in green light. It has an extremely smooth figure. I installed the fan mod for fast cooldown. It is powered by a 12 volt battery (not included) with a cigar lighter plug (female). I'll supply the mating cord. OTA & optics are in pristine condition. Asking $ 4,900 plus shipping. I have for it the standard factory adapters and Tak dovetail. If you need a Losmandy dovetail that is drilled for the Tak mounting base, I have that too for an extra $ 50.00. The mounting is not included in the price; but I have Altaz mounts available if you need one. Mounts are equipped with 4000 step encoders and slo-mo controls.