Celestron’s CGEM is one of Celestron’s first ventures into modern Computerised German Equatorial Mounts (Hence the name CGEM) and is the older brother of Celestron’s Advanced VX Mount, a smaller Celestron Equatorial mount.
The CGEM is a mount for use with visual observing and astrophotography. It is commonly recognized as a “Clone” or even contender of the Skywatcher NEQ6, but it does have some differences making it a better mount for visual observing, at the cost of performance for astrophotography. Celestron’s customer support is excellent, and fast, making this an attractive choice if you want to be up and running again quickly if something goes wrong.
The CGEM mount has a stated weight capacity of 40 lbs or 18 kilograms, although this number is difficult to interpret sometimes, as the manufacturers of these mounts are not very specific as to their intended usage. If you are doing visual, feel free to load it up to the limit or even exceed it by a few kgs by adding more counterweights, typically as the errors in positioning are too small to notice.
However, when you are doing more accurate tasks, specifically astrophotography, the mount’s precision of tracking is more critical ...