ZWO ASI174MM The ASI174MM is an uncooled monochrome astronomy camera built around the Sony IMX174LLJ. Its 11.3 × 7.1 mm sensor records 1936 × 1216 pixels with 5.86 µm sampling.
Manufacturer model: ZWO ASI174MM · Specifications checked against manufacturer data on 2026-11-03
The ASI174MM is an uncooled monochrome astronomy camera built around the Sony IMX174LLJ. Its 11.3 × 7.1 mm sensor records 1936 × 1216 pixels with 5.86 µm sampling.
Global-shutter capture
The manufacturer specifies a 12-bit ADC, 32,000-electron full well, 77% peak quantum efficiency and read noise of As low as 3.5 electrons. Capture speed is 128.2 fps at 12-bit; 164.5 fps at 10-bit. Smaller regions of interest can increase frame rate; speed depends on ADC mode, output format, exposure and connection. The global shutter exposes the frame simultaneously, reducing rolling-shutter distortion during motion.
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
ADC modes
12-bit normal; 10-bit high speed
46787
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–300 s
Capacité de puits (e⁻)
32000
Interface
USB 3.0; USB 2.0 compatible
Cadence maximale
128.2 fps at 12-bit; 164.5 fps at 10-bit
QE max. (%)
77
Taille des pixels (µm)
5.86
Alimentation
USB powered
Fenêtre de protection
AR-coated window
Bruit de lecture (e⁻)
As low as 3.5
Résolution (px)
1936 × 1216
Capteur
Sony IMX174LLJ
Backfocus du capteur
6.5 mm bare; 17.5 mm with 11 mm ring
Dimensions du capteur (mm)
11.3 × 7.1
Obturateur
Global shutter
Logiciel
Windows; Linux; macOS with compatible ZWO drivers/software
Port de guidage ST4
Yes
Poids (g)
140
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ZWO ASI174MM The ASI174MM is an uncooled monochrome astronomy camera built around the Sony IMX174LLJ. Its 11.3 × 7.1 mm sensor records 1936 × 1216 pixels with 5.86 µm sampling.
Manufacturer model: ZWO ASI174MM · Specifications checked against manufacturer data on 2026-11-03
