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.
Imaging performance
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.
Applications
Monochrome capture supports luminance and filtered imaging. Use suitable external filters to select the wavelength range for lunar, planetary or specialist imaging.
Connections and spacing
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.
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.
Additional specifications
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
71020
Fiche technique
CAN (bits)
12
Diamètre du boîtier (mm)
62
Filetage caméra
M42 × 0.75
Mode couleur
Monochrome
Refroidie
No
Plage d'exposition
32 µs–2000 s
Capacité de puits (e⁻)
14400
Interface
USB 3.0; USB 2.0 compatible
Cadence maximale
5.7 fps unlocked Bin1
QE max. (%)
90
Taille des pixels (µm)
2.3
Alimentation
USB powered
Fenêtre de protection
AR-coated window
Bruit de lecture (e⁻)
1.2–8
Résolution (px)
8288 × 5644
Capteur
Sony IMX492
Backfocus du capteur
6.5 mm bare; 17.5 mm with 11 mm ring
Dimensions du capteur (mm)
19.1 × 13
Obturateur
Rolling shutter
Logiciel
Windows; Linux; macOS with compatible ZWO drivers/software
Port de guidage ST4
Yes
Poids (g)
140
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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
