Overview
The QHY5III715C is an ultra-high resolution back-illuminated color camera with extremely low read noise. The sensor has a 1/2.8-inch optical format, similar to the QHY5III462C. However, the QHY5III715C has 4X as many pixels as the QHY5III462C for 4K resolution with 1.45um pixels.
This makes the new QHY5III715C ideal for smaller short focal length refractors. The exceptionally small pixels subtend a FOV of less than 1 arcsecond at focal lengths of 12 inches (300mm) or longer. The QHY5III715C inherits all of the updates and improvements of the QHY5III Series Ver. 2 line of cameras (See below).
Sample Images
"New Moon"
- Telescope: Celestron C8HD
Camera: QHY5III715C
2000frames
6ms exposure per frame
37% stacked
515MB DDR3 Memory
https://www.youtube.com/watch?v=WYb5d5-5aWw
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.
Specifications
| Model | QHY5III715C |
| CMOS Sensor | Sony IMX715 |
| Pixel Size | 1.45um*1.45um |
| Effective Pixel Area | 3840*2192 |
| Effective Pixels | 8.4 Mega Pixel |
| Fullwell | 5.7ke- |
| Readout Noise | 0.87-2.17e- |
| AD Sample Depth | 12-bit (output as 16-bit and 8-bit) |
| Built-in Image Buffer | 512MB DDR3 Memory |
| ROI Frame Rate | Full Resolution 42FPS @8BIT 23FPS @16BIT 1920Lines 83FPS @8BIT 47FPS @16BIT640Lines 99FPS @8BIT 99FPS @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 |
| Front end | Standard replaceable IR anti-reflection glass |
| Back Focal Length | 17mm (with adapter);8±0.5mm（without adapter） |
| Chip package size | 5.6mm x 3.2mm |
| Debayer | GRGB |
| Weight | 90g |
Extended Near Infrared 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.
Curves
