ZWO ASI678MM Monochrome CMOS Camera – High Sensitivity, Low Noise, and Outstanding Planetary Performance
The ZWO ASI678MM monochrome camera is a next-generation planetary and deep-sky imaging solution that combines cutting-edge sensor technology with the precision that serious astrophotographers demand. Built around the Sony IMX678 CMOS sensor, this camera offers exceptional low-light performance, ultra-low noise, and an impressive dynamic range—making it an excellent choice for high-resolution lunar, planetary, and even certain deep-sky imaging applications.
Advanced Sensor Technology
At the heart of the ASI678MM is the Sony IMX678 1/1.8-inch back-illuminated sensor, which features a stunning 3840 x 2160 pixel resolution (8.29 megapixels) with a 2.0μm pixel size. This fine pixel structure provides an excellent balance of resolution and sensitivity, allowing for incredibly detailed captures of planetary and lunar surfaces. The sensor's STARVIS 2 technology enhances near-infrared sensitivity, making it ideal for imaging in multiple spectral bands, including methane and infrared wavelengths commonly used in planetary astrophotography.
Ultra-Low Noise & High Dynamic Range
One of the standout features of the ASI678MM is its incredibly low read noise. With an HCG (high conversion gain) mode, the camera can achieve a read noise as low as 0.6e-, ensuring clean, detailed images even in challenging lighting conditions. This means that even faint planetary and lunar details can be captured with less interference from background noise. Additionally, the camera offers a high full-well capacity (over 18,000e-) at low gain settings, allowing it to capture a wide range of brightness levels without overexposing highlights—perfect for imaging the full dynamic range of objects like Jupiter and Saturn.
No Amp Glow & Improved Quantum Efficiency
The ASI678MM benefits from zero amp glow technology, ensuring clean backgrounds and a more uniform frame, even with longer exposures. Combined with its high quantum efficiency (QE) of over 80%, this makes it an excellent performer in low-light conditions. Whether you're capturing faint details on Mars or pushing the limits with small deep-sky objects, the high QE ensures you get the most out of your imaging session.
USB 3.0 & High-Speed Performance
For planetary imaging, high frame rates are essential. The ASI678MM delivers fast, uncompressed 12-bit RAW video, allowing you to capture fleeting moments of planetary detail before atmospheric turbulence interferes. Thanks to the USB 3.0 interface, this camera can achieve impressive frame rates:
- 60 FPS at full resolution (3840 x 2160)
- 200+ FPS at smaller ROI settings for high-speed planetary work
This speed is ideal for capturing the fine cloud bands of Jupiter or the intricate surface detail of the Moon in crisp, sharp detail.
Built for Versatility
Whether you're imaging with a long focal length SCT, a fast Newtonian, or a dedicated solar scope, the ASI678MM provides excellent performance across different setups. Its 1.25-inch form factor and C-mount compatibility make it easy to integrate with a wide range of accessories, including motorized filter wheels and atmospheric dispersion correctors (ADCs).
For those looking to push their imaging even further, the ASI678MM also works exceptionally well for lucky imaging of smaller deep-sky targets like planetary nebulae and double stars, where short exposure stacking techniques can bring out incredible detail.
Optimized for Monochrome Imaging
Unlike its color counterpart, the ASI678MM gives you full control over spectral data, making it the superior choice for advanced imaging. When paired with high-quality LRGB and narrowband filters, the monochrome sensor maximizes signal acquisition, giving astrophotographers unmatched detail and flexibility in post-processing.
The Bottom Line
The ZWO ASI678MM is a powerhouse for planetary, lunar, and small deep-sky object imaging. Its combination of a high-sensitivity back-illuminated sensor, ultra-low read noise, fast frame rates, and zero amp glow makes it a top-tier choice for serious imagers looking to push their astrophotography to the next level. Whether you're capturing high-resolution details of Jupiter's Great Red Spot or experimenting with infrared planetary imaging, the ASI678MM delivers unmatched clarity and performance.
If you're looking for a high-quality monochrome camera that balances speed, sensitivity, and low noise, the ZWO ASI678MM is an exceptional choice. Pair it with your favorite filters, and prepare to unlock the full potential of your planetary and lunar imaging sessions.
