QHY268 PH Mono 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 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 mono, 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/

QHY268M PH Specifications
| Attribute | Details |
|---|---|
| Model | QHY268M/C PH |
| CMOS Sensor | SONY IMX571 |
| Mono/Color | Both Available |
| 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 |
| Humidity Sensor | Available in QHY268M only |
| Firmware/FPGA Remote Upgrade | Available via Camera USB port |
| Weight | 810g |
Let customers speak for us
from 179 reviewsI haven't had a chance to try it yet, as it's a present for my son for Christmas, but Andrew was super helpful when buying!
I was purchasing a weight for my ioptron tracker when I saw this tripod and I decided to purchase it as well to give my tracker its own dedicated tripod.being that this one was designed for my to be used on it it was a no brained. I have only used it once so far but it is wonderful and was easy to fit my tracker to. Very satisfied customer
Rechargeable is great. Handy size for pocket, and exceptional pointing in daylight conditions up to 60 odd meters.
Binoculars were easy to set up/focus for my eyesight (wearing glasses). Bundled instructions were easy to follow. Image is crisp and clean when focussing on distant objects(in daytime). Now just need some clear skies so can try them out at night.
A very convenient device for those times when you want to see the sun (or something very bright) and you want to still be able to see afterwards.
Easy to carry as it is small and flat.
Great scope, great accessories, but most importantly the best customer service I've ever seen from any business.
These arrived quickly and were exactly what we needed for seeing the partial solar eclipse! The flat cardboard rectangle ones are great if you wear glasses and find it hard to wear the goggle/glasses shaped ones, these flat ones you just hold up in front of your glasses and they are perfect :)
Arrived within 24 hours (amazing) as we ordered late. I appreciate that they are made to the ISO standard. Thanks!
Appears to be same model as the GSO brand on Aliexpress. Astronz price is same as if not better - shop local. Work fine on my short focus refractor.
Astronz 08" Premium Dobsonian Telescope
Very fast service. This worked wonderfully to view the partial eclipse last Monday morning.
Solar viewers were fab! shame about the clouds for the recent partial solar eclipse but we will save them for the total solar eclipse in 2028!