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The QHYCCD definition for new Astronomy video cameras
STATUS: Fully Released

QHY5III174 is the first in the new QHY5III series CMOS USB3.0 cameras. The camera is designed to be an excellent Planetary, Lunar and Solar and meteor capture video camera. With a 50mmF1.4 C-mount lens it get star up to mag 8 to mag 9 at 30FPS(33ms exposure) live video recording.This high sensitivity with HD resolution will push the video astronomy to a new height.
Sony introduced a new global shutter (GS) CMOS imaging technology called PregiusTM that redefines the GS CMOS imaging category and provides the best of both worlds with fast frame rate and CCD-like imaging performance.  The technology offers lower dark noise, which enables higher gains without compromising image quality, as well as higher quantum efficiency. 
The global shutter eliminates pixelization when imaging the Planets and Moon caused by atmospheric agitation and high frame rates. 

The unique QHYCCD design keeps the 1.25inch eyepiece design. The advantage of this design is a more efficient transfer of heat to the outer case enabling lower noise especially in high ambient temperatures.  The 1.25 inch design also offers the shortest possible backfocus, making the camera ideal for Off Axis guiding. In addition, the QHY5III174 uses the LEMO style connector for the guide port.  These connectors are known for being both rugged and reliable connectors.
QHY5III174 has both mono and color version. The camera is well suited for solar imaging using short focal length telescopes that will capture a full solar disk within the FOV. 

First evaluation of QHY5III174 monochrome (uncooled) by Alberic Debonnevie

Copyright 2002-2015 QHYCCD
QHY5III174 Specification
CMOS Sensor
Sony IMX174 Exmor CMOS sensor (Mono/Color)
Imager Size
Typical 1/1.2inch
Effective Pixels
1936*1216  2.35mega pixels
Effective Area
Pixel Size
Readout Type
Progressive Scan
>32 Ke
Peak QE
78% (Monochrome)
Readout Noise
5.3e@Gain0   2.8e@Gain60     1.6e@Gain100
System Gain
Anti-amplight Control
Yes (Reduce the amplight significantly)
Global Shutter
Max Frame Rate (8BIT)
138FPS @ 1936*1216    260FPS@960*600    490FPS@480*300
ADC Sample Depth
10/12bit,  Output  8bit/12bit 
Exposure Time
Pixel Binning
1x1 2x2
Yes,onchip micro lens array

Guide Port
Yes, 5PIN Lemo aviation socket
Back Focal
Approx. 11mm
Camera Size
1.25inch Eyepiece Size (D=31.6mm)
Optic Window
AR+AR(Mono camera)  AR+IR cut 680nm (Color)
Support Software
Items included in standard package
QHY5III174 camera. Confocal ring. 1.5meter USB3.0 cable. 1.5meter 5pin lemo to RJ11 guide cable. (may not include the 50mmF1.4 lens)
Reference Price
USD549 (this is the price with no tax and ship cost included)
High Quality 5pin Lemo Guide Socket
IMX174 Exmor CMOS Sensor

M100  by QHY5III174M Tester Alberic Debonnevie  M100 : 3350 x 3 sec exposures + darks.16" F/D 4.5 Newtonian .Click image to see the big size image.

M51  by QHY5III174M Tester Alberic Debonnevie  5005 x 2 sec + 2915 x 2.5 sec with 400mm Newton .Click image to see the big size image.

Windows Driver and Software Download
Camera Driver
Update Check
SharpCap Patch
ASCOM Capture
ASCOM Platform
NativeWDM Driver
BroadCast Driver
Mac Driver and Software Download
Driver and Software Cloud Drive Download

Document Download

Refer to Manual


Relativity QE Curve of the Color IMX174 sensor