ZWO ASI678MM The ASI678MM is an uncooled monochrome astronomy camera built around the Sony IMX678. Its 7.7 × 4.3 mm sensor records 3840 × 2160 pixels with 2 µm sampling.
Manufacturer model: ZWO ASI678MM · Specifications checked against manufacturer data on 2026-11-03
The ASI678MM is an uncooled monochrome astronomy camera built around the Sony IMX678. Its 7.7 × 4.3 mm sensor records 3840 × 2160 pixels with 2 µm sampling.
The manufacturer specifies a 12-bit ADC, 11,270-electron full well, 83% peak quantum efficiency and read noise of As low as 0.6 electrons. Capture speed is 47.5 fps advertised maximum. Smaller regions of interest can increase frame rate; speed depends on ADC mode, output format, exposure and connection.
Monochrome capture supports luminance and filtered imaging. Use suitable external filters to select the wavelength range for lunar, planetary or specialist imaging.
The USB connection supplies power and transfers images. The camera uses a M42 × 0.75 interface, with 12.5 mm sensor spacing. Its AR-coated protective window protects the sensor. The body is 62 mm in diameter and weighs 126 g. Match optical adapters and any external filter to the required telescope spacing.
ZWO manufacturer documentation
Use the exact named-model manufacturer connection and operating instructions linked with this product. Optional parts and adapters require their specified spacing and power limits.
Data sheet
ZWO ASI678MM The ASI678MM is an uncooled monochrome astronomy camera built around the Sony IMX678. Its 7.7 × 4.3 mm sensor records 3840 × 2160 pixels with 2 µm sampling.
Manufacturer model: ZWO ASI678MM · Specifications checked against manufacturer data on 2026-11-03
