Product Overview
QHY5III585M/C is an QHY5III V2 series planetary and guiding camera, the enhanced version of QHY5III485C. It has a high sensitivity in the near-infrared and the dynamic range performance has been greatly improved. It has a 1/1.2-inch large sensor and excellent characteristics of zero glow. The product comes with filters including an IR850nm filter.
In this latest generation of sensors, 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.
The IMX585 is a Sony Starvis II processor that enables high sensitivity and high dynamic range (HDR). It also improves sensitivity in the near-infrared range by approximately 1.7 times* compared to the IMX485. The new camera QHY5III585M/C has a large fullwell capacity of over 30ke-, approximately three times that of the previous generation QHY5III485C.
*This data is officially provided by Sony: https://www.sony-semicon.com/cn/news/2021/2021062901.html
The QHY5III (Ver. 2) series planetary and guiding cameras are all equipped with a 512MB DDR3 image buffer which can effectively reduce the pressure on computer transmission, 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, for example.
In comparison, the 512MB DDR3 memory of the new 5III (Ver. 2) series cameras represents a significant upgrade.
QHY5III (Ver. 2) series cameras have adopted a new front-end design with better compatibility.Here we only take QHY5III200M as example, however, ALL V2 cams in the future share these features.
The BFL of V2 cam is only 8mm, which means you can easily compat a V2 cam with your OAG. The basic top adapter includes 1.25 inch threads and you can still use your 1.25 inch filter.
The top adapter glass of V2 can be easily swiched. One of the adavantage of changable top glasses is you can use one filter even you’re using Lens! You can add a 1.25inch-cs adapter to connect CS lens, or add a second CS-C lens for C-mount lens. The two adapters are all standard accessories of V2 cams.
By the way, there’s a 1.25-inch filter wheel adapter to connect your mono planetary cam with the QHYCFW3-S filter wheel.
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.
The custom interfaces of the previous generation of planetary cameras and guiders has been replaced in the QHY5III (Ver.2) cameras with a more universal ST-4 compatible guiding interface. Now, even if the guiding cable is lost or damaged, you will be able to easily get a replacement on the market at a low cost.
The new QHY5III (Ver.2) series of cameras is equipped with a status indicator at the back of the camera. If the camera experiences an abnormal status, the multi-colored indicator light will help to determine the situation with different colors signifying different conditions. During normal operation this indicator light is off, so there is no worry about light contaminating the image.
Jupiter captured by Christopher Go
Equipment: Celestron C14 Telescope+QHY5III585C+Astrophysics AP900GTO mount
| Model | QHY5III585M/C |
| Image Sensor | Sony IMX585 |
| Mono/Color | Both |
| FSI/BSI | BSI |
| Sensor Size | 1/1.2inch |
| Pixel Size | 2.9μm*2.9μm |
| Effective Pixel Area | 3856*2180 |
| Effective Pixels | 8.4 Megapixels |
| Full Well Capacity | 52ke- |
| Read Noise | 0.77e- to 8e- |
| A/D | 12-bit (output as 16-bit and 8-bit) |
| Built-in Image Buffer | 512MB DDR3 Memory |
| Full Frame Rates | 41.5FPS@8bit 23.5FPS @16bit |
| ROI Frame Rates | 1080Lines, 82FPS@8bit, 47FPS@16bit 640Lines, 135FPS@8bit, 79FPS@16bit |
| Exposure Time Range | 11μs-900sec |
| Shutter Type | Electronic Rolling Shutter |
| Computer Interface | USB3.0 Type-C |
| Guide Port | Standard ST-4 Style |
| Telescope Interface | 1.25-inch, with CS and C-Mount |
| Optical Window | AR Anti-reflection Glass |
| Extra Filter | IR850nm Filter Included IR-Cut filter Included |
| Back Focal Length | 17mm (with adapter); 8mm（without adapter） |
| Weight | 90g |
