QHY268 PH Colour Camera
QHY
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This camera Is normally shipped to order with a delivery time of 2-4 weeks.Please contact us to confirm current pricing and delivery times.
Overview
The QHY268M/C is a new generation of back-illuminated CMOS cameras with true 16-bit A/D and 3.76um pixels. This new Sony sensor is an ideal CMOS sensor exhibiting no amplifier glow. 16-bit A/D gives high-resolution sampling of the whole full well range. Digitizing 0-65535 levels yields a smooth image with a continuous gradation of greyscale levels. The QHY268M/C is a cooled, back-illuminated, CMOS camera based on the Sony IMX571 sensor with native 16-bit A/D and 3.76um pixels.
The QHY268C is a new generation of back-illuminated CMOS cameras with true 16-bit A/D and 3.76um pixels. This new Sony sensor is an ideal CMOS sensor exhibiting no amplifier glow. 16-bit A/D gives high-resolution sampling of the whole full well range. Digitizing 0-65535 levels yields a smooth image with a continuous gradation of greyscale levels. The QHY268C is a cooled colour, back-illuminated, CMOS camera based on the Sony IMX571 sensor with native 16-bit A/D and 3.76um pixels.
Native 16-Bits
The Sony IMX571 sensor has on-chip 16-bit A/D for highest resolution of greyscale. The output is real 16-bits with 65536 levels. Compared to 12-bit and 14-bit A/D, 16-bits provides higher sampling resolution. At high gain, the camera yields close to 1e-/ADU with no sample error and low read noise.
High Dynamic Range
Great full well brings vivid colors. One benefit of the back-illuminated CMOS structure is improved full well capacity. This is particularly helpful for sensors with small pixels. Even with unbinned, the 3.76um pixels of the QHY268C has a superb full well capacity of 75ke-.
Ultra Low Read Noise
- 0.7e- Noise at High gain
- 3.5e- Noise at Low Gain
The QHY268C has only 0.7 electron of read noise at highest gain and 6.8 FPS at full resolution readout speed. One electron of read noise means the camera can achieve a SNR>3 at only 4 to 6 photons. This is perfect performance when conditions are photon limited, i.e., short exposures, narrow band imaging, etc., making this large area sensor ideal for sky surveys and time domain astronomy.
Back-Illuminated, High QE
The back-illuminated Sony Exmor sensor has about twice the QE of similar front illuminated sensors. The QHY268C has zero amplifer glow. In addition the dark current is only 0.0005e/pixel/sec @ -20C.
Full technical details can be found at
https://www.qhyccd.com/astronomical-camera-qhy268/
QHY268C PH Specifications
Attribute | Details |
---|---|
Model | QHY268C PH |
CMOS Sensor | SONY IMX571 |
Mono/Color | Colour |
FSI/BSI | BSI |
Pixel Size | 3.76μm x 3.76μm |
Effective Pixel Area | 6252 x 4176 |
Total Pixel Area | 6280 x 4210 (includes optical black area and overscan area) |
Effective Pixels | 26 Megapixels |
Sensor Size | APS-C |
A/D | Native 16-bit (0-65535 greyscale) A/D |
Full Well Capacity | Standard Mode: 51ke- Extended Full Well Mode: >75ke- |
Frame Rates |
Full Resolution: 6.8FPS@8bit, 6FPS@16bit ROI: 2048 lines: 13.6FPS@8bit, 11.5FPS@16bit 1080 lines: 25.4FPS@8bit, 19.5FPS@16bit 768 lines: 35FPS@8bit, 25FPS@16bit 480 lines: 50FPS@8bit, 34FPS@16bit |
Readout Noise | 1.1e- to 3.5e- (5.3e- to 7.4e- in Extended Full Well Mode) |
Dark Current | 0.0005e-/pixel/sec @ -20℃ 0.001e-/pixel/sec @ -10℃ |
Exposure Time Range | 30μs - 3600sec |
Recommended Gain | 30 (PH Mode, or Extended Full Well Mode) 56 (High Gain Mode) |
Amp Control | Zero Amplifier Glow |
Shutter Type | Electronic Rolling Shutter |
Computer Interface | USB3.0 |
Built-in Image Buffer | 1GB DDR3 Memory Buffer |
Cooling System |
Dual Stage TEC cooler: - Long exposures (> 1 second) typically -35℃ below ambient - Short exposures (< 1 second), high FPS, typically -30℃ below ambient (Test temperature +20℃) |
Optic Window Type | AR+AR High Quality Multi-Layer Anti-Reflection Coating |
Telescope Interface | Support M54 or M48 (combined with adapters) |
Back Focal Length | 14.5mm (±0.2) |
Anti-Dew Heater | Available |
Firmware/FPGA Remote Upgrade | Available via Camera USB port |
Weight | 810g |
Let customers speak for us
from 103 reviewsVery good product and good service delivering it promptly.
Very happy with binoculars, great service, and excellent advice
A well made, versatile and useful accessory for 1.25 inch eyepieces. When using small telescopes without a prism or diagonal, there is sometimes not enough focus travel, this extension tube adds to the focus.
This adaptor works well with an iPhone 16 max pro. It’s easy to fit the phone and get it into an eye piece.
It’s a good way to determine what is and isn’t possible with an iPhone camera.
Steady hands with a 12” Dob can capture the Orion cluster. Open star clusters are also great targets.
Very happy with our new binoculars and great service from Astronz
A great product that is easily charged via usb-c.
I purchased the 8” Astronz Dobsonian and it’s been amazing! First use I was in awe of Jupiter and moons, Saturn, Orion Nebula, Matariki, things I’d never seen apart from pictures. Andrew was super helpful. It’s really easy to setup and use, really good quality, so much to discover!
I have set it up on my sky tracker and tripod, ready to try but due to busy work and no clear sky in the last couple of week I had no opportunity tu use it. Can you ask for my feedback a bit later please. I gave 5 stars for excellent service and support by Astronz
I recently made a small purchase but gained a wealth of information and advice on my next scope purchase.
I can’t imagine shopping anywhere else for scope equipment. I was also delighted to acquire a PC connection cable for my now discontinued Meade Goto scope.
Very quick delivery of a great product, thank you
This eyepiece is a perfect addition for my older 8" Dobsonian telescope. Crystal clear view of 47 Tucanae and a nice view of M42 & even NGC2070. Ofcourse the planets are excellent. My older Dob' came with only 25mm & 9mm plossl so the 15mm is a welcome addition for casual observing.
Very nice. A lovely complement to my old pair 7x50 Tento (made in USSR). Recommend.