Comparison
The Celestron NexStar 5SE is the clear winner for nearly every amateur astronomer. The single most important differentiator is portability combined with performance; the NexStar 5SE weighs just 8kg versus 35kg for the CGEM II, yet delivers dramatically superior scores across every category. The NexStar 5SE scores 78 overall compared to 46, with particularly striking advantages in planetary observation (56 versus 23), deep sky viewing (55 versus 23), and beginner-friendliness (53 versus 37).
The Celestron CGEM II Computerized German Type Motorized Equatorial Mount appears designed for a specific use case that never materializes in practice. While it's slightly cheaper, you sacrifice 32 points of overall performance and gain 27kg of dead weight. Even for astrophotography, where the CGEM II theoretically excels with its larger mount structure, the NexStar 5SE still scores higher at 66 versus 48.
Buy the NexStar 5SE if you want a genuine all-purpose observatory that you can actually transport and set up without frustration. Buy the CGEM II only if you've already committed to permanently mounting it at a fixed location, which almost no amateur does. The NexStar 5SE represents superior value and capability for your money.
Why choose Celestron CGEM II
No significant advantages identified.
Why choose Celestron NexStar 5SE