Features Specifications Application Download Adapters Back
Model QHY600 PRO  (Professional Version, previous name QHY600U3G20)
QHY600 PH     (Photographic Version,previous name QHY600U3)
Image Sensor SONY Full Frame BSI CMOS Sensor IMX455ALK-K (Industry Grade)
This sensor is available in both -C (
consumer grade) and -K (industry grade).  General speaking the -K version has longer lifetime than the -C version.  Currently ,both the monochrome QHY600 Photographic version and monochrome QHY600 Professional version use the -K version of the sensor.
Pixel Size 3.76um x 3.76um
Color / Mono Version Both Available.QHY600U3G20M and QHY600U3G20C
Sensor Surface Glass AR+AR Multi-Coated
Sensor Type
Back-Illuminated (BSI)
Effective Pixels
61.17 Megapixels   
(9576*6388 effective area. 9600*6422 with overscan and optically black area)
Effective Image Area
36mm x 24mm
Full Well Capacity (1x1, 2x2, 3x3)
Standard Mode
>51ke-  / >204ke- / >408ke-
Extend Full Well Mode
>80ke-  / >320ke- / >720ke-
16-bit (0-65535 levels) at 1X1 binning
18-bit at 2X2, 19-bit at 3X3, 20-bit at 4X4 software binning

*QHY600 uses the software digital binning for 2*2binning. With digital sum, 2*2binning will be four 16-bit summed then it is 18-bit.
Sensor Size
Full Frame Format
Frame Rate
USB3.0 Port Image Transfer Speed
  • Full Frame Size: 4.0FPS (8-bit output)
  • Full Frame Size: 2.5FPS (16-bit output)
  • 7.2FPS at 9600x3194, 22.5FPS at 9600x1080, 28FPS at 9600x768, 47FPS at 9600x480, 160FPS at 9600x100,

Fiber Port Image Transfer Speed (QHY600U3G20 only)
  • Full Frame Size: 4.0FPS (16-bit output)
Read Noise 1.0e- to 3.7e-  (Standard Mode)
Dark Current 0.0032e-/p/s @ -20C    0.0056e-/p/s @ -10C
Zero Amplifer Glow Yes
Exposure Time Range 40us - 3600sec
Firmware/FPGA remote Upgrade  Supported. Via Camera USB Port
Shutter Type Electric Rolling Shutter
Computer Interface USB3.0 / 2*10 Gigabit Fiber Port
(2*10Gigabit Fiber Port is a feature of the professional version only and needs the QHYCCD PCIE Graber card.  In the early bird version the hardware is disabled.  It can be enabled in an upgrade to the professional version in the future) 
Hardware Frame Sequence Number Supported

(Professional Version Only)  4PIN, high speed with flexible FPGA conntrol. 
Can be used as trigger in/out, multiple camera sync capture control, high precision GPS time measurement etc.

Built-in Image Buffer 1GBytes(8Gbit)/ 2GBytes(16Gbit)DDR3 memory
Non-volatile memory / On camera storage Build-in total 64MByte Flash Memory. 10MBytes user-accessible space for stellar ROI frames for analysis of exoplanet investigation, occultations, atmospheric seeing measurement, focus, optical analysis, etc.  Supports 100*100 image x 500 frames, 50*50 image x 4000 frames, 25*25 image x16000 frames, 10*10 image x 250000 frames 
Cooling System
Dual Stage TEC cooler:
- Long exposures (> 1 second) typically -35C below ambient
- Short exposure (< 1second) high FPS, typically -30C below ambient

QHY600 Water Cooling Version  - Long exposures (> 1 second) typically -45C below ambient
Water Cooling Version QHYCCD can offer this version. Contact QHYCCD or Dealer before order this version
QHY600 Water Cooling Version  - Long exposures (> 1 second) typically -45C below ambient
Anti-Dew Heater
Telescope Interface
Optic Window Type

AR+AR High Quality Multi-Layer Anti-Reflection Coating

Power 40W/100% 
Back Focal Length
17.5mm (±0.2 
(A special short backfocus front piece is available as an option. It provides is about 7mm B.F.L. Contact QHYCCD if you need this version)
Weight (net)
Scientific Professional Version : 965g *
Amateur Photographic Version: 850g*

Special Short Backfocus Version :870g*
*Not including the M54/0.75mm center/tilt adjust ring)
Reference Price (TAX not included)
Amateur  Photographic Version: USD4599   
includes a 30% discount card of QHY367PRO-C

Scientific Professional Version:   USD8000   
includes a 30% discount card of QHY367PRO-C,The Scientific Professional Version price does not include the QHYCCD Fiber PCIE grabber card

Click here to see a short video description of the QHY600 and QHY268C

QHY600 Linearity Test
The linearity is very important for astronomical photonmetry. We did a test for the QHY600 under the ultra high fullwell mode. The results is quite good to show a good linearity response range up to 73ke.  The results can be found here:https://www.qhyccd.com/index.php?m=content&c=index&a=show&catid=23&id=273

Multiple Readout Modes is a new function for newer QHY Cameras.  Different readout modes have different driver timing, etc., and result in different performance.  Each readout mode has its advantage and disadvantages.  The QHY600 currently has three readout modes.  In the future QHYCCD may add more modes. These readout modes are currently supported in the QHY ASCOM Camera Driver, SharpCAP software and the N.I.N.A software. You can find the readout list box in the software.

QHY600 Performance Curves in Readout Mode #0 (Photographic Mode).  In this mode there is a drop in the noise between Gain 25 and Gain 26.  We recommend setting the Gain to 26 to begin.  At this setting the full well is 27ke- and readout noise is 2.7e-.  For every long exposures you can lower the gain from this point to increase the full well capacity. 

QHY600 Performance Curves in Readout Mode #1 (High Gain Mode).  Please note there is a HGC/LGC switch point at gain55 to gain56. Gain0-55 uses LGC and Gain55-100 uses HGC.



QHY600 linear test results show good linearity up to 73000e-.  This is in readout modes # 0 and # 2. Gain = 0. In the linear fit graph we deleted the data above 73000e- and got R ^ 2 = 0.9998.\
At very short exposure times below 20ms the value is quite small and may be flicker induced by the tablet.
QHY600 Linearity Test



QHY600's quantum efficiency curve. Please note that the curve is absolute QE


The Mechanical Size and Back focal Length (in optic) of  QHY600  Early Bird Price Version and Professional Version 

QHY600U3         (Amateur Photographic Version)



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