QHY5III715 Colour Camera
QHY
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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 four times as many pixels as the QHY5III462C, offering 4K resolution with 1.45μm pixels.
This makes the new QHY5III715C ideal for smaller, short focal length refractors. The exceptionally small pixels provide a field of view (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.
Extended Near-Infrared Sensitivity
The latest sensors feature deeper pixel wells, enhancing sensitivity to red and near-infrared (NIR) light. These sensors achieve peak NIR sensitivity nearly equal to visible light.
512MB DDR3 Buffer
The QHY5III (Ver. 2) cameras include a 512MB DDR3 buffer, doubling the memory of many deep-sky astrophotography cameras with 256MB. This reduces computer transmission load, ideal for high-speed planetary imaging.
New Front-End Design
The redesigned QHY5III (Ver. 2) cameras offer improved compatibility with a slim 8mm BFL, making them easy to integrate with off-axis guiders (OAGs). The 1.25-inch threaded adapter supports filters and interchangeable top glass allows seamless use of CS or C-mount lenses. A 1.25-inch filter wheel adapter connects monochrome cameras to QHYCFW3-S filter wheels.
USB 3.2 Gen 1 Type-C Interface
Upgraded to USB 3.2 Gen 1 Type-C, these cameras offer better durability and flexibility than the previous USB 3.0 Type-B. Use high-quality cables to avoid performance issues.
Universal Guiding Interface
The cameras now feature an ST-4 compatible guiding interface, replacing proprietary designs, allowing easy replacement of guiding cables at low cost.
Indicator LED
An indicator LED at the back signals camera status using different colors for diagnostics. It remains off during normal operation to prevent light contamination.

Specifications
| Attribute | Details |
|---|---|
| Model | QHY5III715C |
| Image Sensor | Sony IMX715 |
| Mono/Color | Color Only |
| FSI/BSI | BSI |
| Sensor Size | 5.6mm x 3.2mm |
| Pixel Size | 1.45μm x 1.45μm |
| Effective Pixel Area | 3840 x 2192 |
| Effective Pixels | 8.4 Megapixels |
| Full Well Capacity | 5.7ke- |
| Read Noise | 0.87e- to 2.17e- |
| A/D | 12-bit (output as 16-bit and 8-bit) |
| Built-in Image Buffer | 512MB DDR3 Memory |
| Full Frame Rates | 42FPS@8bit, 23FPS@16bit |
| ROI Frame Rates | 1920Lines, 83FPS@8bit, 47FPS@16bit 640Lines, 99FPS@8bit, 99FPS@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 | – |
| Back Focal Length | 17mm (with adapter); 8mm (without adapter) |
| Weight | 90g |
Let customers speak for us
from 231 reviewsAs a complete novice this is easy setup and go I already have some amazing nebula images
Had a problem with a mount and the Astronz team couldn't have been more helpful in supplying a part (a replacement PCB from their demo model) that I could fit and test. Just outstanding and responsive customer service.
Great design, no more lost thumbs crews!
Exactly what I wanted. Super fast delivery to Christchurch.
An amazing device, incredible
Astronz 08" Premium Dobsonian Telescope
I was pleasantly surprised when Astronz came up with a new RA axis lock to replace my broken one. Astronz always go the extra mile!
Nice product. Astronz were a great help advising me what I should get. Great sellers
As a stargazing company, we get most of our gear through Astronz. Customer relations with the team at Astronz are always pleasant and we find their products including this base to be A+. We recommend Astronz to all our stargazers.
Bought 8" Dobsonian from AstroNZ. It came securely packed, delivered promptly. Took a bit to assemble but was totally worth it. Have been able to view moon only so far, still not mastered to look at farther objects. But easy to use and great product. Will recommend to beginners definitely.
Weight arrived promptly and as described. Happy with the purchase
Great performance for its price point in an 8" SCT. Sharp across most of the FOV, with only slight softening at the edge.
great gadget
The telescope is great. I've got a lot to learn though it seems.
I haven't had as much viewing opportunities as I would like but you can't do much when you have 2 weeks of constant overcast. I like the crayford focuser, and the finderscope is high quality with a good aperture, the views of Jupiter, the moon, Carina and Orion nebula and Omega centauri have been great with the 30mm super view and 9mm, thinking about getting a 6mm, Barlow lens and a neutral density filter to expand my arsenal, so far going from a 60mm refractor to a 8in Newtonian hasn't been too hard. Collimating for the first time was a challenge but i have it sorted out. Only few things to point out is I don't think I got a manual but the video was plenty helpful, perhaps you could sell dew shields for the finderscope and to protect the secondary mirror as well as telescope heaters for active protection, potentially some new videos starring Andrew about star hopping to find dim DSO's without a computerized mount. Overall very happy with my purchase, with the 8in dobsonian being known as a lifetime scope I know It will always have a place in my heart even if I do upgrade to bigger and better scopes. Thank you Andrew for your great customer support and service. I bid you clear skies from the deep south!
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