The QHY174GPS camera uses the 1/1.2-inch SONY IMX174 CMOS sensor with global shutter, 5.86um pixels,138FPS@1920*1200, high QE of 78%, and low read noise of 3-5e-. Unlike a rolling shutter, a global shutter guarantees that the exposure time for the whole image area is uniform, beginning and ending at exactly the same time. This type of shutter is ideal for high precision time-domain applications
The QHY174GPS has a unique built-in GPS module that can sync with the atomic clock signals received from GPS satellites. The QHY174GPS can record the start and end of exposure time with 1us precision anywhere on earth. The QHY174GPS was selected by the NASA New Horizons Team to successfully captured the MU69 occultation in the Summer of 2017
The IMX174 sensor normally has significant amplifier glow which will affect the entire image area in exposures of any significant length. However, QHYCCD has successfully incorporated our unique amplifier glow reduction technology into the design of the QHY174GPS camera to yield excellent results with this sensor.
The QHY174GPS is an ideal camera for high precision time based scientific projects. It features two working modes. In 'Free Running' Mode, the hardware records GPS time and internal 1µm calibrated time into the image header of each frame. In 'Multi-Site Sync' Mode, users can control multiple cameras that are thousdands of miles apart so that they start exposures at exactly the same time (within a micro second)
In the amatuer domain, the QHY174GPS may be used to accurately set ephemerides data for derotation of images.
Model QHY174GPS (Mono)
Sensor 2mega pixel 1/1.2" sensor
AR Coating On Sensor AR+AR High Quality Multi-Layer Anti-Reflection Coating
Pixel Size 5.86µm x 5.86µm
Effective Pixel Area 1920 x 1200 pixels
Effective Pixels 2 megapixels
Effective Image Area 11.25mm x 7.03mm
Fullwell >32ke-
AD Sample Depth 12bit/10bit (output as 16bit and 8bit)
Full Frame Rate and ROI Frame Rate
138FPS@1920 x 1080
260FPS@960 x 600
490FPS@800 x 600
Readout Noise 5.5e @ Gain 0% ~ 1.6e @ 100% Gain
Exposure Time Range 5µs-900sec
Anti-Glow Control Yes
Shutter Type Electric Global Shutter
Computer Interface USB3.0
Time Stamp Accuracy 1 micro second of GPS UTC Clock
Built-in Image Buffer 512Kbytes Flash Memory. 100Kbytes user-accessible space for stellar ROI frames for analysis of exoplanet investigation, occultations, atmospheric seeing messurement, focus , optic analysis etc. Support 100 x 100 image x 10 frames 50 x 50 image x 40 frames. 25 x 25 image x160 frames 10 x 10 image x 1000 frames （total frame numbers is based on 8bit image)
Cooling System Dual Stage TEC cooler（approx -40C° below ambient)
Anti-Dew Heater Yes Air-proof Chamber with silicon gel tube socket
Telescope Interface M42/0.75 (T2)
Optical Window Type IR cut filter
Back Focal Length 17.5mm
Weight 450g
Other Ports 6PIN RJ11 Guide Port, 4PIN QHYCFW Port.
Power Supply 12V DC input (Required for TEC use)
