Comparison
The Celestron NexStar 8SE is the clear winner for most amateur astronomers at this price point. Its 8-inch aperture delivers substantially superior light gathering and resolution compared to the ED127's 5-inch objective, translating to noticeably brighter deep sky views and sharper planetary detail. The single most important differentiator is aperture.
The NexStar 8SE's 203mm mirror versus the ED127's 127mm means the Celestron collects 2.5 times more light, a fundamental advantage that no other feature can overcome for observational astronomy. The NexStar's computerized GoTo mount and tracking also eliminate the learning curve associated with manual equatorial mounts, though this convenience comes at the cost of portability. The Celestron NexStar 8SE suits observers prioritizing light-gathering power, planetary views, and automated object location; buy this if you value aperture and ease of use.
The Explore Scientific ED127 FCD100 is best for backyard observers who frequently relocate their telescope and prioritize optical quality in a lightweight, portable package; its superior f/7.5 design excels at wide-field observations despite modest aperture. Purchase the NexStar 8SE unless portability is non-negotiable for your observing habits. Its scoring advantage across nearly every category reflects genuine optical and mechanical superiority at equal price.
Why choose Celestron NexStar 8SE
Why choose Explore Scientific ED127