With its standard dovetail plate and 20-pound payload capacity, the white Vixen Optics Porta II Alt-Az Telescope Mount Head allows you to attach a vast array of optical tube assemblies (OTAs) outfitted with Vixen-style dovetail plates and enjoy fast and easy observations. This most basic of mount designs is ideally suited for quick astronomical or terrestrial viewing. Two control knobs, one for each axis, allow you to make small and precise adjustments for tracking subjects. Its two 120-tooth worm gears let the altitude and azimuth axes travel a full 360° circle.
The Porta II operates without locks and clutches, but rather with a friction system. This means you can simply move the mount by hand to quickly find your subject, then use the knobs to track. Since many different OTAs can be mounted, there are adjustment screws on each axis to add more or less tension, based on the weight of the OTA. Weighing just 5 pounds it's an easy mount to pack and carry and can be easily attached to most Vixen tripods or common photo tripods.