ZWO ASI662MM Monochrome USB3.0 Camera – Ideal for Guiding and Entry-Level Planetary Imaging

The ZWO ASI662MM is a compact monochrome camera designed for reliable guiding and beginner astrophotography. Whether you’re tracking with precision or capturing crisp lunar and planetary images, this versatile model delivers dependable results without overcomplicating your setup.

At its core is the Sony IMX662 back-illuminated sensor, featuring a 1/2.8″ format and 2.9µm pixels with a full HD resolution of 1920 x 1080 (2.07MP). Its high sensitivity and low read noise make it ideal for low-light applications, producing detailed, high-contrast images of the Moon and planets.

When used for guiding, the ASI662MM achieves up to 107.6 FPS at full resolution—fast enough to deliver responsive updates to your guiding software. This high frame rate helps ensure smooth, accurate tracking during longer exposures with your main imaging rig.

ZWO’s Zero Amp Glow technology keeps your images clean by eliminating amp glow, which means fewer distractions in dark frames and less time spent on post-processing. Whether you’re guiding or imaging, this feature enhances overall image quality and workflow efficiency.

The camera also includes a 256MB DDR3 memory buffer and a USB 3.0 interface, ensuring fast, stable data transfer. This reduces dropped frames and readout errors, especially during high-speed imaging sessions.

High Sensitivity, Smarter Imaging

The ASI662MM delivers an outstanding 91% peak quantum efficiency (QE), capturing more detail and contrast even in dim conditions. This high sensitivity makes it particularly effective with narrowband filters or during twilight imaging.

Its automatic High Conversion Gain (HCG) mode activates at gain 252, reducing read noise while maintaining up to 11 stops of dynamic range. This feature balances bright highlights and subtle surface details, giving you clean, well-exposed planetary images without sacrificing tonal range.

The ZWO ASI662MM stands out as a smart, practical choice for astrophotographers starting out or looking to add a capable guide camera to their setup. Its excellent sensor performance, fast data handling, and user-friendly features make it a reliable performer across multiple roles.

Images taken using the ZWO ASI662MM

Mechanical Diagram