ZWO ASI461MM Pro 100MP Cooled Monochrome Medium Format Camera

ZWO ASI461MM Pro 100MP Cooled Monochrome Medium Format Camera

DESCRIPTION
The ZWO ASI461MM Pro is a professional cooled monochrome camera built for wide-field deep-sky and scientific imaging. It features the Sony IMX461ALR-C medium format CMOS sensor measuring 44 x 33 mm, delivering ultra-high resolution at 11,656 x 8750 pixels (102 MP) with 3.76 µm pixels. In Bin2 mode, pixels grow to 7.5 µm and full well capacity rises to 198Ke.

It has a native 16-bit ADC with 65536 levels, BSI architecture, 91% peak QE, and a read noise as low as 1.0e. With zero amp glow circuitry, this camera ensures exceptionally clean images even during high-gain, long exposures.

The integrated 512MB DDR3 buffer safeguards data transfers, and the two-stage TEC cooling system drops the sensor temperature 30–35 °C below ambient. An anti-dew polyimide heater prevents moisture on the front window (5W power consumption, user-switchable).

USB 3.0 connectivity ensures fast, lossless data transmission (5Gbps), and the dual USB 2.0 hub allows for connecting accessories like filter wheels or focusers. A 12V external power source is required for the TEC and heater.

4. TECHNICAL SPECIFICATIONS

• Sensor: Sony IMX461ALR-C, CMOS, BSI, Medium Format

• Resolution: 11,656 x 8750 (101.99 MP)

• Pixel size: 3.76 µm (7.5 µm in Bin2)

• Sensor size: 44 x 33 mm (diagonal 55 mm)

• Full well: 50.3Ke / 198Ke (Bin2)

• Peak QE: 91%

• ADC: 16-bit

• Read noise: 1.0e

• Max FPS: 3.77 fps (full resolution)

• Buffer: 512MB DDR3

• Cooling: Two-stage TEC, -30/-35 °C below ambient

• Anti-dew heater: Integrated, 5W (switchable)

• Exposure range: 32 µs to 2000 s

• Shutter: Electronic rolling

• Interface: USB 3.0 / USB 2.0

• USB 2.0 hub: Yes (2 ports)

• Back focus: 17.5 mm / 22.5 mm

• Window: AR-coated

• Dimensions: 43.856 mm x 32.9 mm

• Weight: 910 g (2.006 lb)

• Operating temp: -5 °C to +50 °C

• Power: 12V DC (5A recommended)

• OS Compatibility: Windows 7/8/10 32&64, Linux, macOS

• Warranty: 2 years (ZWO)