Micro Focuser for 50mm Guidescope 1.25 Inch

Achieve Precision Focus for Your Guidescope Setup

This micro focuser is an essential upgrade for astrophotographers who demand pinpoint accuracy from their 50mm guidescope. Designed to fit the rear thread of popular right-angle 9x50 finderscopes from GSO, Saxon, Skywatcher, Celestron, and Orion, it transforms a standard finder into a high-performance guiding instrument. With 10mm of smooth, fine-tuned focuser travel, you can dial in razor-sharp star focus with ease — eliminating the frustration of imprecise or wobbly adjustments that can compromise your guiding accuracy during long-exposure imaging sessions.

The focuser features both an M42 (T-thread) connection and a 1.25-inch eyepiece holder, giving you flexible compatibility with a wide range of guide cameras, eyepieces, and accessories. A brass compression ring securely holds your camera or eyepiece in place without marring or scratching delicate surfaces, ensuring a reliable grip throughout your imaging session. With a 45–55mm backfocus range, it accommodates most popular guide cameras on the market, including compact CMOS models commonly used for autoguiding.

Whether you're setting up a dedicated autoguiding system for deep-sky astrophotography or simply looking for a more controlled way to focus your finderscope for visual use, this micro focuser delivers the mechanical precision you need at an accessible price point. Its compact, lightweight design adds minimal bulk to your guidescope assembly, keeping your overall setup balanced and manageable. If you've ever struggled to reach perfect focus with your guide camera or found your finderscope's native focuser lacking in fine adjustment, this accessory is a straightforward, highly effective solution that will elevate your guiding performance from the very first night out.