ZWO ASI678MM

The ZWO ASI678MM is an advanced monochrome planetary camera for demanding astrophotographers who want to achieve maximum sharpness and sensitivity. Equipped with the Sony IMX678 CMOS sensor, this camera delivers a resolution of 3840 × 2160 pixels (8.3 MP) and a pixel size of just 2.0 µm. That means you can capture fine details without always needing a Barlow lens, even at telescopes with shorter focal lengths.

Compared to its predecessor, the ASI178MM, the ASI678MM offers significantly lower readout noise, higher sensitivity and improved IR response. Thanks to the amp glow-free design, recordings remain clean even at longer exposures. The High Gain Mode (from gain 182) also provides dramatic noise reduction and increased dynamic range.

With a frame rate of up to 47.5 fps at full resolution, the camera is ideal for lucky imaging, combining short exposures into razor-sharp planetary and lunar images. Its compact design (126 g) and dual connections (M42/T2 and 1.25″) make it suitable for virtually any telescope setup.

Observation goals
The ZWO ASI678MM is particularly suitable for advanced astrophotographers working with monochrome setups and filters. Suitable for:

• High-resolution planet and moon photography with filter wheels
• Sun observation (only with safe solar filter and Baader filter system)
• Infrared imaging for better performance in moderate seeing
• Compact deep-sky objects such as planetary nebulae and globular clusters
• Electronically Assisted Astronomy (EAA).
• Autoguiding via the integrated ST4 interface

Specifications

• Sensor: Sony IMX678 (mono, 1/1.8″)
• Resolution: 3840 × 2160 (8.3 MP)
• Pixel size: 2.0 µm
• Sensor size: 7.7 × 4.3 mm
• Diagonal: 6.4 mm
• Bit depth: 12-bit
• Full Well Capacity: 11,270 e-
• Readout noise: from 0.6 e-
• FPS: 47.5 (full resolution)
• Interfaces: USB 3.0, ST4 autoguider port
• Max exposure time: 33.3 min
• Min. exposure time: 32 µs
• Connections: M42 × 0.75 (T2) and 1.25″
• IR filter: no
• Amp glow: no
• Dimensions: Ø 62 mm × 36 mm
• Weight: 126 g
• Compatible with: Windows, Mac, Linux