The Vixen Porta II Mount w/ Train-N-Track Motors is a altazimuth telescope mount that can handle up to 20 pounds of gear, with Slow Motion Flexible Handles to minimize vibrations and keep your view sharp when searching for celestial targets and tracking them. The Vixen Porta II Mount w/ Train & Track Motors rapidly damps down any vibrations and keeps your telescope totally stable, even with your tripod at its maximum height. The mount head is easily removed to allow for a switch to a heavier tripod. In addition, this is a great mount for terrestrial viewing. With no locks or clutches, our gear drives make it a simple matter to precisely track a planet or a ship on the horizon by turning the elevation and/or azimuth control handles. The Vixen Porta II Mount with TNT Motors features slow motion control of both axes, solid central bolt for easy tripod change, flex handles and accessory tray. The "World-Standard" dovetail attachment system was developed to allow the Vixen PORTA II Scope Mount to accept various dovetail mounted optical tubes and binoculars.
The Vixen Train-N-Track (TNT) System for the Porta Mount is a basic alt-az motor drive system with adjustable or trainable tracking. With alt-azimuth mounts, the motor speeds will vary greatly depending on what area of the sky you are viewing. The Vixen TNT Motor Drive includes adjustable speeds on both axes and high speed centering. The friction drives also allow you to move the telescope around by hand without unlocking any clutches. You just let go and the drive takes over. With a little practice, objects can be kept in the eyepiece for 10 minutes or more. The Vixen Porta Mount TNT Telescope Motor System is battery driven using 8 AA batteries and includes complete instructions.