ZWO 30mm f/4 Mini Guide Scope

ZWO 30mm f/4 Mini Guide Scope – Lightweight and Reliable for Precision Guiding

When it comes to deep-sky astrophotography, precise tracking is essential. The ZWO 30mm f/4 Mini Guide Scope is designed to provide the accuracy you need without adding unnecessary weight to your imaging setup. Whether you're using a lightweight refractor or a larger imaging rig, this compact guide scope delivers excellent performance with minimal hassle.

Compact and Lightweight Design

At just 120mm in length and weighing only 250 grams (about 8.8 ounces), the ZWO 30mm f/4 Guide Scope is perfect for portable astrophotography setups. It easily mounts to most telescopes using its integrated dovetail foot, which is compatible with standard finder scope shoes. This allows for a quick and secure attachment to your imaging system without the need for additional adapters.

High-Quality Optics for Accurate Guiding

The 30mm aperture and f/4 focal ratio provide a wide field of view, making it easier to locate and track guide stars. The optics are fully multi-coated to enhance light transmission and reduce reflections, ensuring a sharp and contrast-rich view of your selected guide star. This is especially useful for guiding software like PHD2, as it ensures that the guide camera receives a clean and well-defined signal for tracking corrections.

Smooth Helical Focusing Mechanism

Focusing a guide scope can be challenging, but ZWO has made it simple with a precision helical focuser. This allows for fine adjustments to achieve perfect focus on your guide star. Once set, the focus mechanism stays locked in place, preventing any unwanted shift during long-exposure imaging sessions.

Wide Compatibility with Guide Cameras

The ZWO 30mm f/4 Guide Scope features a standard 1.25-inch eyepiece holder with a compression ring, making it compatible with most planetary and guide cameras on the market. It pairs especially well with ZWO’s ASI120MM Mini, ASI174MM Mini, and other similar guide cameras. The solid connection ensures stability, reducing flexure that could interfere with guiding accuracy.

Perfect for Lightweight and Mobile Setups

If you're running a portable imaging setup or working with a small refractor, this guide scope is an excellent choice. Its compact size and lightweight design prevent balance issues on your mount, while still providing the guiding accuracy needed for deep-sky imaging. The f/4 focal ratio offers a solid balance between sensitivity and resolution, making it an ideal choice for guiding mid-range focal length telescopes.

Easy Mounting Options

The included dovetail-style mounting base allows for easy attachment to most standard finder scope brackets. If you prefer, you can also secure it using rings and a dovetail plate for a more customized setup. This flexibility ensures that the ZWO 30mm f/4 Guide Scope can integrate seamlessly into almost any astrophotography rig.

Why Choose the ZWO 30mm f/4 Mini Guide Scope?

• Lightweight and compact – Won’t overload your mount
• Helical focuser – Precise and stable focus adjustments
• Fully multi-coated optics – Improved light transmission and clarity
• Wide field of view – Makes guide star selection easier
• Universal compatibility – Works with most guide cameras and finder shoe mounts

Whether you're a beginner looking to refine your guiding technique or an experienced astrophotographer in need of a reliable and travel-friendly guide scope, the ZWO 30mm f/4 delivers top-tier performance in a small package. Pair it with a high-sensitivity guide camera and enjoy sharper, more precise tracking for your long-exposure deep-sky images.