DESC: The C6 N-GT uses a diffraction-limited parabolic primary mirrors for razor sharp star images across a wide field of view. The optics of this heavy-duty telescope are manufactured to Celestron's uncompromising standards with star images that are classic textbook Airy disks. Both C4-R and C6-N are mounted on the CG-4 mount. The mount features precision gears for extremely smooth motion. A counterweight, latitude scale, setting circles, and slow motion controls on both axes are standard, so you have a fully loaded telescope right from the start.