ZWO Seestar S50 Pro fixes the smart telescope’s biggest weakness

The original Seestar S50 did more than any product in recent memory to make astrophotography approachable — a single box that finds, tracks and photographs deep-sky objects without a mount, a laptop or a working knowledge of polar alignment. Its one real weakness was resolution. ZWO has now launched the Seestar S50 Pro, and that is precisely what it has fixed. Full details are on the official ZWO Seestar S50 Pro page. Four times the resolution The headline upgrade is the sensor. The original S50 used a 1/2.8-inch Sony IMX462 producing 1920 x 1080 images — fine for sharing, limiting for anything else, and the S50’s weakest specification against rivals. The Pro moves to a 1/1.2-inch CMOS at 3840 x 2160, so 4K. That is a substantial jump, and not only in pixel count. A physically larger sensor gathers more light per photosite, which matters enormously in astrophotography where you...