QHY5III174M The QHY5III174M is an uncooled monochrome planetary and guide camera built around Sony IMX174. It records 1920*1200 pixels with 5.86μm*5.86μm sampling and 12bit (output as 16bit and 8bit) conversion/output.
Manufacturer model: QHY5III174M · Specifications checked against manufacturer data on 2026-11-03
The QHY5III174M is an uncooled monochrome planetary and guide camera built around Sony IMX174. It records 1920*1200 pixels with 5.86μm*5.86μm sampling and 12bit (output as 16bit and 8bit) conversion/output.
Capture performance
QHY lists 32ke- full well and 2.2e- to 5.5e- read noise. The published full-frame rate is 138FPS@8bit. The global shutter exposes the image area simultaneously, making this camera useful for moving targets and short-exposure imaging.
Optical and guiding connections
The interface is 1.25-inch, with CS and C-Mount; the guide connection is Custom ST-4. Backfocus is 12mm. The AR window preserves broader wavelength transmission for external filter selection.
USB and physical format
The camera uses USB3.0 Type-B for image transfer and power, with a published weight of 85g. This first-generation model uses a custom ST4 cable arrangement; use its matching guide cable.
Use the named-model manufacturer connection diagram and the backfocus reference for the selected adapter. Readout mode and output format affect frame rate, noise and full-well capacity.
90885
Data sheet
ADC and output
12bit (output as 16bit and 8bit)
Backfocus
12mm
Colour mode
Monochrome
Computer interface
USB3.0 Type-B
Cooled
No
Effective pixel area
1920*1200
Effective pixels
2.3 Megapixels
Full frame rates
138FPS@8bit
Full well capacity
32ke-
Guide port
Custom ST-4
Model
QHY5III174M
Optical connection
1.25-inch, with CS and C-Mount
Optical window
AR Anti-reflection Glass
Pixel size
5.86μm*5.86μm
Power
Powered through USB; no TEC cooling supply
Protective window
AR anti-reflection glass
Read noise
2.2e- to 5.5e-
Roi frame rates
262FPS@960*600; 490FPS@480*300
Sensor
Sony IMX174
Sensor illumination
FSI
Sensor size
1/1.2inch
Shutter
Electronic Global Shutter
Software
QHY All-in-One driver/SDK; SharpCap, compatible ASCOM software and guiding applications
Weight
85g
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QHY5III174M The QHY5III174M is an uncooled monochrome planetary and guide camera built around Sony IMX174. It records 1920*1200 pixels with 5.86μm*5.86μm sampling and 12bit (output as 16bit and 8bit) conversion/output.
Manufacturer model: QHY5III174M · Specifications checked against manufacturer data on 2026-11-03
