ZWO ASI585MM USB3.0 Mono Astronomy Camera
| Article number: | ASI585MM |
| Availability: | In stock |
| Delivery time: | In Stock! |
NOTE: As of 8/29/25, ZWO has issued the following update for ASI585 Cameras. See below.
To further enhance the imaging performance of the ASI585 series and provide astrophotographers with an even better observing experience, ZWO’s R&D team has conducted extensive testing and precise optimizations. The HCG gain of the ASI585 series cameras has been adjusted to 200, allowing the cameras to maintain a wider dynamic range in HCG mode, reaching up to 12 stops.
This upgrade applies to five models: ASI585MM/MC, ASI585MM/MC Pro, and ASI585MC Air. After updating, you will need to re-shoot calibration frames to ensure proper stacking in post-processing.
We sincerely hope this optimization will further enhance your astrophotography journey.
We look forward to seeing the stunning images captured with your upgraded ASI585 cameras—feel free to share your results and experiences on social media or in the AstroImg!
The ZWO ASI585MM USB3.0 Mono Astronomy Camera
Introducing the ZWO ASI585MM, an astronomical camera equipped with the latest Sony IMX585 CMOS sensor. This high-performance camera features a large sensor format of 1/1.2", a resolution of 3840×2160, and an exceptional characteristic of ZERO AMP GLOW! It boasts a pixel size of 2.9μm×2.9μm and operates in 12-bit mode with a super low readout noise, offering a high frame rate of 46.9 FPS.
8.29MP Sensor
The ASI585MM has the same pixel size as the ASI462MC (2.9μm) but offers four times the resolution, totaling 8.29 megapixels. The sensor size is 11.13×6.26mm with a diagonal length of 12.84mm. Its 1/1.2" large sensor format makes it ideal for solar and lunar imaging. It can also be used as an all-sky camera to monitor weather conditions, including cloud cover, rain, and meteors.
STARVIS 2 Technology
The ASI585MM uses the SONY IMX585 sensor with STARVIS 2 technology, offering zero amp glow, reduced dark current noise, and a 3x larger full well capacity compared to its predecessor, the ASI485MC. It is highly sensitive to red, green, and near-infrared (NIR) light, particularly in wavelengths above 850nm, offering 1.5 times greater sensitivity than the ASI485MC.
Large Full Well Depth
The back-illuminated sensor structure, combined with advanced pixel technology, results in very low readout noise and a large full well depth. In low-light conditions, this camera excels in capturing clear, detailed images of celestial objects.
Camera Curve
Thanks to the camera’s built-in HCG mode, it reduces readout noise at high gain while maintaining high dynamic range similar to low gain settings. At a gain of 252, the HCG mode is activated, bringing the dynamic range close to 12-bit with a readout noise as low as 1.5e.
USB 3.0 & 256M DDR3 Memory
The ASI585MM is equipped with a USB 3.0 interface and a built-in 256MB DDR3 cache, ensuring stable data transmission. This setup is essential for long exposures, preventing frame drops and reducing the glow effect caused by slow readout speeds.
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