24 Megapixel, Full Frame 35mm Format, Cooled, CMOS Color Camera
Ultra High Performance
The QHY128C uses the Sony IMX128 full frame, 35mm format, 24 Megapixel, 14-bit CMOS sensor. This sensor is also used in the Nikon D600 camera.  It has read noise of 1.8e- to 4e-  (2.7e- @ unity gain), and high dynamic range of more than 14 stops. 
True RAW Image Output
While the QHY128C has the same CMOS sensor as the Nikon D600 cameras, unlike these consumer DSLR cameras, the QHY128C offers True RAW Image output.  In the DSLR implementation there is a RAW image output, but typically it is not completely RAW.  Some evidence of noise reduction and hot pixel removal is still visible on close inspection.  However, the QHY128C offers TRUE RAW IMAGE OUTPUT and produces an image comprised of the original signal only, thereby maintaining the maximum flexibility for post-acquisition astronomical image processing programs.
Unique Thermal Noise Reduction Technology
In addition to efficient 2-stage thermoelectric cooling, QHYCCD employs a unique thermal noise control technology to reduce CMOS sensor noise to a very low value without affecting the integrity of the raw image.  This proprietary technology can be found to improve noise performance across the whole 165/168/247/128/367 product line, producing much better noise reduction than any competing camera model.
Zero Amplifier Glow
The QHY128C has zero amplifier glow no matter how long the exposure. 
128MB DDRII Image Buffer
QHY128C has 128MB DDRII image buffer to cache the image and avoid the risk of a frame loss. The image data is stored in the DDR immediately after acquisition and then transferred to computer from the memory buffer.  This avoids problems of a busy USB port when there are other peripherals using the same port as the camera.
Anti-Dew Technology
QHYCCD has more than 10 years of experience designing cooled cameras.  The QHY128C receives the benefit of that decade of design work by featuring full anti-dew technology for both CCD sensor cover glass and the sensor chamber optical window. The  QHY128C has an electric heating board for the chamber window to prevent the formation of dew and the sensor itself is kept dry with our silicon gel tube socket design for control of humidity within the sensor chamber.
AR+AR Optical Window
In order to avoid halos around bright stars the QHY128C has a AR+AR coated optical window rather than the common IR cut window for Single-Shot Color cameras.  This permits full access to the red wavelength of H-alpha and SII without attenuation by the window coating.  For RGB color balance, without passing the near IR wavelengths above 700nm, a separate removable 2-inch UV/IR filter with the desirable passband characteristics is placed in a custom filter holder in front of the camera

* Each camera is carefully calibrated at the factory with a high-precision axis measurement device.  Orthogonal placement of the sensor is guaranteed to be flat to the image plane to better than +/-20um across the sensor from edge to edge, so there is no need to adjust for camera tilt absent mechanical errors elsewhere in the image train.

CMOS Sensor
AR Coating On Sensor Yes
Pixel Size
5.97um x 5.97um
Effective Pixel Area
Effective Total Pixels
24 Megapixels
Effective Image Area
36.03 x 24.05mm
Full Well
AD Sample Depth
14bit ADC, output as 16bit and 8bit
Typical Sensor Size
Full Frame Size
Max Frame Rate @ Full Resolution 5FPS
Frame Rate in ROI
9FPS@2160 LINES  (eg. 7400*2160, 4096*2160 etc)
16.5FPS@1080 LINES (eg. 7400*1080,1920*1080 etc)
22.5FPS@768 LINES
Readout Noise 1.8e- to 4e-   (2.7e- @unity gain)
Dark Current 0.0006e/pixel/sec @ -15C
Dynamic Range >17000:1  (More than 14 STOPs)
Exposure Range 60us-3600sec
Shutter Type Electric Rolling Shutter
Computer Interface USB3.0
Color Version
Mono Version
QHYCCD and ChipMod can supply the monochrome MOD version.Please consult Dealer
Cooled System
Dual Stage TEC cooling (about -35C below ambient)
Optic Window Type with AR+AR High Quality Multi-layer Anti-Reflection coating (User need install the UVIR cut filter to the camera)
Build-in Anti-Dew Heater
Telescope Interface
M54/0.75 female thread (on the faster installer/center adjust ring)
Back Focal Length
More Information
Free Shipping Yes
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