Comparison
The Celestron Advanced VX 6" Refractor is the clear winner for most amateur astronomers. It delivers superior optical performance across nearly every observing category, with particularly strong scores in planetary viewing (65 vs 8), astrophotography (68 vs 39), and overall capability (71 vs 40). The single most important differentiator is aperture and optical design; the Celestron's 150mm Schmidt-Cassegrain collects significantly more light than the Explore Scientific's 102mm refractor, directly translating to brighter images and better detail resolution on deep-sky objects and planets.
The Celestron Advanced VX 6" Refractor suits observers prioritizing optical performance and versatility across multiple observing disciplines, though you'll need a dedicated mount location due to its 47kg weight. The Explore Scientific ED102 FCD100 makes sense only for extremely portable observers willing to accept severe limitations in planetary work and deep-sky performance in exchange for a lightweight, grab-and-go setup. Unless portability is genuinely your dominant constraint, invest in the Celestron.
Its superior optics and equatorial mount with GoTo tracking justify the minimal price difference and will provide years of satisfying observation.
Why choose Celestron Advanced VX
Why choose Explore Scientific ED102