The ASI585MM Pro is ZWO’s latest deep-sky imaging camera, built around the 4K Sony CMOS sensor with a 1/1.2″ format and 2.9μm pixels. It delivers an impressive resolution of 3840×2160 (8.29MP) and excellent sensitivity, particularly in the near-infrared range. In high-speed mode, it captures up to 47 frames per second at full resolution with low read noise, making it ideal for both fast imaging and long-exposure deep-sky work. With its high signal-to-noise ratio and strong performance, this camera is a powerful yet cost-effective option for beginners entering deep-sky astrophotography.

Power Requirement:

All ASI-cooled cameras require external power. Use a 12V DC adapter (3A–5A, D5.5×2.1mm, centre-positive) or a lithium battery between 11–14V. Power supplies outside this range may cause permanent damage.

One Camera, Multiple Roles

With STARVIS 2 technology, the ASI585 Series delivers advanced imaging performance that rivals many cooled cameras. Its high frame rate makes it a versatile choice — perfect for deep-sky imaging as well as solar, lunar, and planetary photography.

Bigger Full Well, Better Results

Thanks to its back-illuminated sensor design, the ASI585 handles light more efficiently. Even with unbinned 2.9μm pixels, it offers an impressive 40ke- full well capacity — nearly three times higher than the previous IMX485 sensor. That means better dynamic range, reduced overexposure in bright areas, and a stronger signal-to-noise ratio.

Zero Amp Glow

Say goodbye to amp glow. The ASI585 Series delivers perfectly clean dark frames, even during long exposures and high gain. This hardware-level feature requires no software tricks — just clean, smooth astro images every time.

Fast USB 3.0 + Built-in USB 2.0 Hub

• USB 3.0 Port – Transfers data at up to 5Gbps, allowing 47fps capture at full 8.29MP resolution in 10-bit high-speed mode.

• USB 2.0 Hub – Lets you connect other devices like an EFW, guide camera or EAF directly to the camera.

Two-Stage TEC Cooling

The ASI585 Series features powerful two-stage TEC cooling that drops the sensor temperature up to 35°C below ambient. This significantly reduces dark current and sensor noise, even during long exposures.
*Note: Delta T of 35°C is tested at 30°C ambient temperature. Cooling efficiency may vary with longer sessions or lower outside temperatures.

Excellent Performance, Low Noise

Built-in HCG mode reduces read noise at high gain while maintaining high dynamic range. At gain 252, HCG activates automatically, delivering read noise as low as 0.7e with nearly 11-bit dynamic range.

Impressive QE Peak

ZWO testing shows the ASI585 sensor reaches a peak quantum efficiency of 91%, making it highly effective at capturing faint deep-sky details.

Connection Methods (Back Focus Distance)

Structural Dimension Diagram