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QHY550P Four Direction Monochrome Polarize CMOS IMAGER (UNCOOLED)

QHY550 has the 2/3inch SONY 5.0mega pixel IMX250 Global shutter CMOS sensor. Besides the monochrome and color version it has the special Polarize version.

Unlike the rolling shutter technology used in most cmos cameras, The Pregius is global shutter pixel technology for active pixel-type CMOS image sensors that use Sony’s low-noise CCD structure,and realizes high picture quality. For high speed moving object and the atmospheric agitation the pregius sensor can generate undisborted imaging.

QHY550 has build-in two stage TEC cooler. It can cooled the sensor to -35C below ambient.  This can reduce the dark current of IMX250 significantly. Which greatly improving the dark signal detect performance. Especially for detect the tiny difference of the polarize light. Which is necessary for the astronomy, life science and optical lab.


With  the on-pixel four direction polarize filter, It can capture the polarize image at only one exposure.No need change the polarize filter for three times.  Tt can generate the polarize video at 68FPS high frame rate. Polarize detector can be used in industry image to detect the scratch, transmissible object and getting the no-reflection pictures. In gemstone,geology  and material science, biology science it also has important applications.

Since the polarizer is formed during the semiconductor process, form and formulation of polarizer, uniformity, mass productivity and durability are excellent compared to conventional polarization sensors. Furthermore, The Polarization sensor is covered with an anti-reflection layer which helps to reduce reflectance and avoids poor flare and ghost characteristics.

Model QHY550P (Four Direction Monochrome Polarize Version)
COMS Sensor SONY IMX250 Pregius Global Shutter CMOS Sensor
Pixel Size 3.45um*3.45um
Effective Pixel Area 2464 × 2056
Effective Pixels 5.0 mega pixel
Effective Image Area 8.50mm * 7.09mm
Fullwell 11000e
AD Sample Depth 12BIT (output as 16bit or 8bit format)
Sensor Size Typical 2/3inch
Full Frame Rate and ROI Frame Rate 2458*2056 68FPS@8BIT
2458*2056 34FPS@12BITROI 1080lines   (eg.2458*1080,1920*1080)126FPS@8BIT
ROI 480lines       (eg.2458*480, 640*480)   270FPS@8BIT
ROI 100lines       (eg.2458*100,100*100)    940FPS@8BIT*Note:QHYCCD has optimized the cmos drive freqency and limit the max frame rate. The CMOS sensor may not work under the maxium frequency to ensure the better noise performance. If you need the customized higher frame rate version please contact QHYCCD.
Readout Noise 2.0e-2.5e
Dark Current 0.005e/pixel/sec @ -10C
Exposure Time Range 20us-600sec
Anti-Glow Control Yes. Big reduction of the amp-glow of the IMX250 sensor
Shutter Type Electric Global Shutter
Computer Interface USB3.0
Built-in Image Buffer 128MByte DDR2 memory
Non-volatile memory / On camera storage Build-in total 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*100 image x 10rames   50*50 image x40frames. 25*25 image x160frames 10*10 image * 1000 frames (total frame numbers is based on 8bit image)
Cooling System Dual Stage TEC cooler(about -35C below ambient)
Anti-Dew Heater Yes
Telescope Interface M42/0.75  or optional C-mount
Optic Window Type AR+AR High Quality Multi-Layer Anti-Reflection Coating (for QHY550M and QHY550P)
IR cut Coating(for QHY550C)
Back Focal Length 18mm(±0.3)
Weigth 460g

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