ZWO ASI585MM-PRO [MONO]

 

The ZWO ASI585MM-PRO is a high-performance monochrome astronomy camera equipped with the latest Sony 1/1.2" CMOS sensor and 2.9 μm pixel size. It delivers ultra-high sensitivity and a full 4K resolution of 3840 × 2160 (8.29 megapixels), making it a powerful and affordable choice for deep sky imaging.

Designed for speed and precision, the ASI585MM-PRO supports up to 47 frames per second at full resolution with low read noise and excellent signal-to-noise ratio. Its enhanced near-infrared sensitivity makes it particularly effective for capturing fine details in nebulae, galaxies, and other faint deep-sky objects.

This camera is ideal for astrophotographers seeking a cost-effective cooled monochrome solution that delivers professional-level results, even for those just getting started in deep sky imaging.

Note：

External power supplies are needed for all ASl-cooled cameras. We recommend you use a 12V 3A~5A DC adapter (D5.5×2.1mm, centre pole positive) or a lithium battery with 11-14V to power the camera. Be aware that using a power supply out of this voltage range will probably lead to irreparable damage to the camera.

The STARVIS 2 technology brings ASI585 Series more advanced imaging performance compared to other cooled cameras. Its high frame rate makes it not only suitable for DSO photography but also solar/lunar/planetary photography.

 

Large Full Well Capacity

The back-illuminated structure improves the camera’s full-well capacity. Even with unbinned 2.9μm pixels, the ASI585 Series has a full-well capacity of 40ke—nearly three times that of the last-generation sensor IMX485. A larger full-well capacity makes the camera more efficient in collecting light, effectively restrains the highlight area from being overexposed, and improves the signal-to-noise ratio.

Zero Amp Glow

ASI585 Series exhibits extremely clean dark frames with zero amp glow! No matter how long the exposure is and how high the gain value is, you can easily get clean and smooth astro images!

Note: This feature is implemented directly at the hardware level and does not require software control.

512MB DDR3

ASI585 Series uses a USB 3.0 interface, along with the built-in 512MB DDR3 cache, ensuring high-speed, smooth, and stable data transmission.

USB 3.0 Port & USB 2.0 HUB

USB 3.0 Port: Provides 5Gb bandwidth to allow ASI585 to run at 47fps at 8.29MP full resolution (10bit, high-speed mode).
USB 2.0 HUB: Can be used to connect various kinds of USB devices such as EFW, guide camera, and EAF.

Two-stage TEC Cooling

Thanks to the two-stage TEC cooling, ASI585 Series can lower the CMOS sensor temperature to more than 35 degrees Celsius below ambient temperature, which can greatly reduce dark current generation and sensor noise even during extended exposure times.

*The Delta T 35℃ is tested at 30℃ ambient temperature. It might get down when the cooling system is working for a long time. Also, as the ambient temperature falls, the Delta T would decrease.

Below is the dark current curve of ASI585 Series at the temperature from -20℃ to 30℃.

Low read noise, High dynamic range

The camera has a built-in HCG mode, which can effectively reduce read noise at high gain and allow the camera to maintain the same high dynamic range as it does at low gain.

When the gain reaches 252, the HCG mode will be automatically turned on and the dynamic range reaches a level close to 11bit. The read noise in this case can be as low as 0.7e.

Specifications

 

Sensor	1/1.2″ CMOS Sony IMX585 monochrome
Resolution	8.29 megapixels 3840 x 2160
Pixel size	2.9 µm
Sensor size	11.14 mm x 6.3 mm (12.84 mm diagonal)
Quantum efficiency	91%
Exposure range	32 µs – 2000 s
Read noise	0.7 e-
Full well capacity	40,000 e-
Bit rate	12 bit
Speed	47 fps
Shutter type	Rolling shutter
Cooling	ΔT of 35°C (dual-stage TEC)
Memory buffer	512MB DDR3
ROI	Supported
Compatibility	Mac, Windows, Linux
Protecting window	D32-2 AR coated
Ports	USB 3.0 / USB 2.0
Back focus	6.5 mm
Connections	2" / 1.25" / M42 x 0.75
Dimensions	Ø 78 mm; ↨ 73.5 mm
Weight	470 g
Power supply	12V 3 A  (2.1×5.5 mm  connector)
SKU	ASI585MC-P

Items included

 

Gallery

Thor’s helmet-Dean Linic

NGC3372 -Simon Lewis

Jupiter-Jim Rivera

Moon -Christopher Schementi

Downloads

ZWO software and drivers