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Benefiting from the back-illuminated structure, the area around the photo-diode is reduced so that for a given pixel size the BSI sensor provides a greater full well capacity compared to a front illuminated sensor. The QHY294C has a full well capacity of nearly 65,000 eletrons with 4.63um x 4.63um pixels, almost the same as an interline CCD camera with 9um pixels.
The QHY294C produces 16.5 high resolution frames per second, 11.6 Megapixels with 14-bit A/D. Higher rates are achieved in ROI mode, for example, 41 FPS at 1080 lines. The QHY294C has an internal 256MByte high speed DDR3 image buffer. This significantly reduces any issue of lost frames due to a busy computer CPU or slow USB communication packet errors.
The QHY294C uses QHYCCD's proprietary low dark current control technology. This technology significantly reduces the dark current noise in our CMOS cameras. The QHY294C has super low dark current as a result, lower than many CCD cameras, allowing for very long exposure times. The QHY294C's CMOS sensor has a dual gain mode, HGC (high gain) and LGC (Low gain). The QHY294C will switch the two modes automatically when the gain is set to 1600.
The QHY294C benefits from more than a decade of cooled camera design experience. QHYCCD has implemented full dew control solutions. The optical window has a built-in dew heater and the CMOS chamber is protected from internal humidity condensation. QHY294C has a short back focal distance allowing for flexibility in setting up your optical train.
- QHYCCD COLDMOS QHY294C color camera
- T2-50,8mm adapter
- USB 3.0 cable
- 220V power unit
In this table we have summarized main features of QHYCCD's cooled CMOS cameras to allow you to easily compare and choose the best one based on your telescope.
|Type:||Camera CMOS raffreddata|
|Resolution||4164 x 2796|
|Sensor dimensions (mm)||19,3 x 13|
|Sensor diagonal (mm)||23.2|
|Pixels dimensions (µm)||4.6|
|A/D converter||14 bit|
|Cooling||-35°C rispetto a T ambientale|
|Readout Noise (e-)||1e- at high gain|
|ST4 integrated autoguide port||No|
|Telescope interface||Filetto T femmina (42x0,75)|
|Connection to PC||USB 3.0|
|Power||External 12V 5A|