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Cooled USB 3.0 Planetary and Deep Sky COLDMOS Camera
Status: In Stock

QHYCCD pleased to introduce our QHY174M-GPS COLDMOS camera with optional GPS based precision time and location function, useful for imaging occultations, eclipses, meteors, and other scientific imaging requiring a highly precise recording of the time and location of the observation on every frame. 

The QHY174M has dual stage TE cooling to -45C below ambient with full anti-moisture control including heated optical window and removable silicon tube for the sensor chamber.  The camera has our 4-pin QHYCFW2 filter wheel control port and a 6-pin autoguider port.  The QHY174 also has an anti-amp glow function.  It can reduce the IMX174 sensor's amplifier glow significantly in long exposures.

The IMX174 sensor has a global shutter and is capable of high frame rates, both ideal features for a time-domain imaging camera.  In 2014 Sony introduced this device which featured a new technology called Pregius ?, redefining the global shutter CMOS imaging category and providing 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 also eliminates pixelization caused by atmospheric agitation when imaging the Planets and Moon at high frame rates.

An Independent detailed review of the QHY174 camera can be found at:
1.Evaluation of the Multipurpose QHY174M Cooled Monochrome Camera

Information on the QHY Anti-amp glow feature can be found here:
2.QHYCCD Anti-amp glow function for IMX174 now extended to very short exposure

QHY174M/C Camera Specification
CMOS Sensor
1/1.2 inch Exmor CMOS sensor with global shutter
Effective Pixels
1920 x 1200
Pixel Size
5.86um x 5.86um
Effective Area
11.25mm x 7.03mm
Electronic Global Shutter
Readout Noise
5e@low gain    3e@high gain
System Gain
Unity Gain
Frame Rate (on 8bit)
138FPS @ 1936 x 1216    260FPS@960*600    490FPS@480 x 300
ROI Support
Yes. Any Area ROI
Exposure Time
50us - 1800 sec
AD Sample Depth
10-bit/12-bit (8-bit/12-bit output)

Anti-amplight Control
Yes (Reduces amplifier glow significantly)
2-stage TEC, -40C below ambient, typical.
Temperature Regulated
USB Powered for camera and +12V powered for TEC
Anti Dew Control
Connector for removable silicon gel tube
Heater board for CMOS chamber optical window
Computer Interface
USB 3.0 Super Speed
Telescope Interface
M42/0.75 & 2-inch adapter. Optional C-mount adapter
Color Wheel Port
4-pin QHYCFW2 socket
Guide Port
6-pin RJ11 Guide Port
Optic Window
AR+AR (Mono)    IR+AR(Color)
Power consumption
QHY163 Electric Interface
12V input with lock, USB 3.0 socket, 4-pin QHYCFW, 6-pin RJ11
Reference Price (Not include tax)
QHY174M       USD939              QHY174M-GPS      USD1239   w/TE Cooling
QHY174C       USD899              QHY174M-GPS      USD  939   w/o Cooling

QHY174M-GPS Time Domain Imager
With GPS PPS Synced High Precision Hardware Stamp

The QHY174's most interesting feature is the optional precision GPS time functions.  The QHY174M-GPS will record the global shutter exposure starting and ending time with microsecond precision.  Two QHY174 cameras, for example, each located anywhere in the world, can have the same time base, accurate to microseconds.  In order to guarantee the starting and ending time of the exposure, the QHY174 has a built-in LED pulse calibration circuit precise to 1 microsecond.

The QHY174 camera is designed to be an excellent planetary, lunar, solar and meteor capture video camera. With a 50mm F1.4 lens it will record mag 8 to mag 9 stars in live video recording at 30FPS (33ms exposure), several magnitudes fainter than can typically be seen with the naked eye.  The QHY174's high sensitivity with HD resolution will push video astronomy to new heights.

There main differentiating features of this camera over competing models:
1.    Optional GPS time and location data embedded in the image
2.    Anti-dew heater to eliminate condensation and ice from forming on the camera
3.    Anti-amp glow circuit to reduce the amplifier glow in long duration images
4.    128MB DDR memory to speed download times and reduce dropped frames.

Working Modes

Master mode:  In Master Mode, the camera is free running and the internal 10MHz GPS synced clock will measure and record the shutter's opening and closing time.

Slave mode:  In Slave Mode you can input a target start time and the interval period for two frames. For example: You want three cameras in different locations (maybe thousands of kilometers apart) to start an exposure at 2016.3.9.UTC 14:00:00.000000 and then to continue with exposures at the interval time of 0.100000 sec.  After you input these value, all the three cameras will wait until this time and then simultaneously start video recording, e.g.:

2016.3.9 UTC 14:00:00.000033
2016.3.9 UTC 14:00:00.100033
2016.3.9 UTC 14:00:00.200033
2016.3.9 UTC 14:00:00.300033
(The 0.00033 is a global delay of the CMOS shutter).

The price of uncooled QHY174-GPS is USD939.  The price of cooled QHY174-GPS is USD1239.

Recording software for QHY174MGPS.  The time stamp and other GPS information is embedded into the image. The software decodes it in real time and displays the information on left.  Since the data is embedded, it will never be lost so long as you keep the original image.

Windows Driver and Software Download
Camera Driver
Update Check
SharpCap Patch

Ascom guide, Ascom Capture, and Ascom 2st are all packaged into one driver called AScome3InOne, which means after you finished installing this driver, Ascom guide, Ascom Capture, and Ascom 2st would be installed on your computer.
ASCOM Platform
NativeWDM Driver
BroadCast Driver
(QHY174GPS only)

Mac Driver and Software Download
Linux Driver and Software Download
Driver and Software Cloud Drive Download

QHY174-GPS New Horizon Science Project
More than 20 QHY174-GPS cameras were selected by NASA's New Horizon Team for imaging an occultation by MU69.  The data will be using for the New Horizon MU69 flyby in 2019.  The imaging mission was a success and the MU69 occultation event was record by five team members.   

"This effort, spanning six months, three spacecraft, 24 portable ground-based telescopes, and NASA's SOFIA airborne observatory was the most challenging stellar occultation in the history of astronomy, but we did it!" said Alan Stern, New Horizons principal investigator from SwRI.

QHY174GPS installed in the Tibet Station of NAOC for Meteor Imaging