ZWO ASI294MM The ASI294MM is an uncooled monochrome astronomy camera built around the Sony IMX492. Its 19.1 × 13 mm sensor records 8288 × 5644 pixels with 2.3 µm sampling.
Manufacturer model: ZWO ASI294MM · Specifications checked against manufacturer data on 2026-11-03
The ASI294MM is an uncooled monochrome astronomy camera built around the Sony IMX492. Its 19.1 × 13 mm sensor records 8288 × 5644 pixels with 2.3 µm sampling.
The manufacturer specifies a 12-bit ADC, 14,400-electron full well, 90% peak quantum efficiency and read noise of 1.2–8 electrons. Capture speed is 5.7 fps unlocked Bin1. 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 6.5 mm bare; 17.5 mm with 11 mm ring sensor spacing. Its AR-coated window protects the sensor. The body is 62 mm in diameter and weighs 140 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.
| Unlocked bin1 | 8288 × 5644; 2.3 µm; approximately 14 ke full well |
|---|---|
| Bin2 | 4144 × 2822; approximately 4.6 µm; 14-bit; approximately 66 ke full well |
Data sheet
ZWO ASI294MM The ASI294MM is an uncooled monochrome astronomy camera built around the Sony IMX492. Its 19.1 × 13 mm sensor records 8288 × 5644 pixels with 2.3 µm sampling.
Manufacturer model: ZWO ASI294MM · Specifications checked against manufacturer data on 2026-11-03
