"Introducing The SkyGuider Pro - iOptron's next generation camera tracking device! Leading the camera tracker market for nearly four years, iOptron's SkyGuider Pro pushes closer to perfection. All metal mechanical structure Attaches to a camera tripod with 3/8"" or 1/4"" threads Payload 11 lbs (5kg) (balanced, with DEC mounting bracket, exclude CW) Silent tracking for smooth camera motion, perfect for long-term exposures Detachable alt-azi base with fine latitude and azimuth adjusters for easy polar alignment Includes iOptron AccuAlign dark-field illuminated polar scope Adjustable polar scope illumination 4 tracking speed (1X, 1/2X, solar and lunar). 1X celestial tracking for imaging the sky and stars; 1/2X tracking speed for imaging both the starry night and the landscapes at the same time Operation in both northern and southern hemisphere Quick slew (144X) for camera framing adjustment Built-in rechargeable battery for up to 20 hours of operation (20deg. C) Built-in ST-4 auto guiding port HBX port for external hand controller Micro USB port for power, charging and firmware upgrade Built-in shutter triggering port Padded carry bag included DEC mounting bracket Counterweight and CW shaft Vixen dovetail saddle for scope mountingThe redesigned SkyGuider Pro mount head is more compact, small enough to fit on your palm, better precision, silent tracking, bui"