QHY5III678M/C is a new planetary and guiding camera of the 2nd generation of QHY5III series, the upgraded version of QHY5III178M/C, with excellent near-infrared high sensitivity.
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 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 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 | QHY5III678 |
| CMOS Sensor | Sony IMX678 |
| Pixel Size | 2.0um*2.0um |
| Effective Pixel Area | 3856*2180 |
| Effective Pixels | 8.4 Mega Pixel |
| Fullwell | 9ke- |
| Readout Noise | 0.57-3.3e- |
| AD Sample Depth | 12-bit (output as 16-bit and 8-bit) |
| Built-in Image Buffer | 512MB DDR3 Memory |
| ROI Frame Rate | Full Resolution 43FPS @8BIT 22FPS @16BIT
1080Lines 85FPS @8BIT 43.5FPS @16BIT 640Lines 140FPS @8BIT 71FPS @16BIT |
| Exposure Time Range | 11us-900sec |
| Shutter Type | Electric Rolling Shutter |
| Computer Interface | USB3.2 Gen1 Type-C |
| Guide Port | st4 |
| Telescope Interface | 1.25-inch, compatible with CS-port and C-port lenses by replacing the front-end connector (An IR AR glass and an IR850nm filter are included in the standard version.) |
| Back Focal Length | 17mm（with adapter）; 8±0.5mm（without adapter） |
| Weight | 90g |