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QHY5III585C 1/1.2" BSI Colour CMOS Sensor USB 3.2 (IMX585) 2.9µm

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QHY5III585C is a new generation of QHY5III V2 series planetary guide camera, which is an enhanced version of the QHY5III485C. It has a high sensitivity in the near infrared similar to that of QHY5III462C, while the dynamic range performance is greatly improved. It has a 1/1.2-inch large, zero glow sensor.

The camera is supplied with IR850nm and IR Cut filters.

In this new generation of sensor, the photodiode portion of the pixel well is physically deeper than in previous sensors, allowing photons of longer wavelengths to penetrate deeper into the substrate. This dramatically increases the sensor’s sensitivity to red and near-infrared (NIR) light. The sensor displays almost equal peak sensitivity to NIR light as it does to light in the visible spectrum.

This allows you to capture full colour images with the IR Cut filter fitted and mono images in the IR band with the IR850nm fitted. For planetary imaging this allows you to create very detailed Luminance images to add to the RGB image. Imaging of Methane is also possible.

Internal RAM Buffer

The QHY5III (Ver. 2) series planetary and guiding cameras are all equipped with a 512MB DDR3 image buffer which reduces the chance of dropped frames at high frame rates. This is a great help for planetary photography which often requires writing a large amount of data in a short period of time. Some deep-sky astrophotography cameras on the market today only have 256MB.

In comparison, the 512MB DDR3 memory of the new 5III (Ver. 2) series cameras represents a significant upgrade.

USB C Interface

The new QHY5III (Ver.2) series cameras all use the USB3.2 Gen1 Type-C interface. Compared to the USB3.0 Type-B interface used in the previous generation, the Type-C interface has a longer life and is more flexible.

Tips: It is recommended to use the official standard Type-C data cable of QHYCCD. As the market is flooded with a large number of poor-quality Type-C cables, casual use may lead to the camera malfunctioning. If you use your own spare cable, please make sure it is a high-quality cable.


Model QHY5III585C
CMOS Sensor Sony IMX585 BSI
Pixel Size 2.9µm
Pixel Array 3856x2180
Effective Pixels 8.4 Megapixel
Sensor Format 1/1.2"
Frame Rate (Full Frame) 41.5FPS (8 Bit) / 23.5FPS (16 Bit)
Frame Rate (ROI 1920 Lines) 82FPS (8 Bit) / 47FPS (16 Bit)
Frame Rate (ROI 640 Lines) 177FPS (8 Bit) / 106FPS (16 Bit)
Full Well Capacity 32ke-
Readout Noise 0.8e- to 5.5e-
A/D 12 Bit
Shutter Electronic Rolling
Interface USB 3.2 Type C
On Board Memory 512MB DDR Buffer
Guide Port 6 Pin RJ11
Telescope Interface 1.25" / CS
Supplied Filters IR Cut and IR850nm



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