Celestron Advanced VX Mount with Celestron Polar Axis Finder Tripod - NexStar Hand Controller - 2-Year Warranty - Bundle includes: - Celestron Polar Axis Finder Advanced VX Mount: Holds a maximum instrument capacity of 30 lbs Advanced VX Mount: Integer gear ratios and permanently programmable Periodic Error Correction eliminates recurring track errors from the worm gear. Advanced VX Mount: New motors offer improved tracking performance & provide more power to overcome load imbalances Advanced VX Mount: Updated industrial design offers more rigidity, less flexure and improved aesthetics