Comparison
The Explore Scientific FirstLight AR90mm clearly wins for most amateur astronomers. The single most important differentiator is aperture; at 90mm versus 31.8mm, the FirstLight gathers nearly nine times more light, fundamentally transforming what you can observe. This advantage translates across nearly every performance metric: a 68/100 overall score versus 57/100, superior deep sky performance (39 versus 20), and significantly better astrophotography capability (35 versus 17).
The FirstLight also scores better for beginners and portability despite being a full refractor, though both use alt-azimuth mounts. The Celestron X-Cel LX 3X Barlow exists in an awkward middle ground. Its smaller aperture severely limits light gathering, making it suitable only for casual lunar viewing in suburban skies.
The FirstLight's f/5.6 focal ratio and 500mm focal length provide genuine versatility across moon, planets, and deep sky objects. Purchase the Explore Scientific FirstLight AR90mm if you're serious about amateur astronomy and want genuine capability across multiple observing categories. Buy the Celestron X-Cel LX only if budget is your absolute constraint and you accept severe limitations on what you can observe.
Why choose Celestron 1.25 Inch
Why choose Explore Scientific FirstLight