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Description
The QHY294M is a 4/3-inch back-illuminated monochrome camera, very much like the QHY294C but with some significant exceptions. The 294C has 11.7 MP at 4.63um, 14-bits. However, Sony binned 2.315um pixels 2x2 on-chip in the 294C version to create 4.63um pixels for each color, R, G, & B. In the monochrome QHY294 we have included two read modes, the first reads the sensor like the color version, 11.7 megapixels, 4.63um pixels and 14-bits. The second read mode unlocks the on-chip binning to yield 47 MP at 2.315um pixels and 12-bits. This sensor is an outstanding performer with extraordinarily high QE, low read noise and dark current, with great dynamic range!
Back-Illuminated - 4/3 inch format BSI
The new QHY294M Pro is a 4/3-inch back-illuminated camera, equipped with Sony IMX492 (Mono) sensor. The 294 Pro has 11.7 MP at 4.63um, 14-bits A/D. or 47 MP at 2.315um, 12-bits A/D.
Pixel Size - Expanding Pixels Mode 11.7MP to 46.8MP
Sony binned 2.315um pixels 2x2 on chip in the 294 Pro version to create 4.63um pixels for each color, R, G, & B. However, in our QHY294 Pro series we have unlocked two read modes, the first reads the sensor in 11.7 megapixels, 4.63um pixels and 14-bits. The second read mode unlocks the on-chip binning to yield 47 MP at 2.315um pixels and 12-bits.
High QE - Low Readout Noise
This sensor is an outstanding performer with extraordinarily high QE, low read noise and dark current. The 294 has 6.8 to 6.9e- readout noise in the lowest gain, 1.6e- read noise near unity gain and 1e- read noise at highest gain - with great dynamic range!
Multiple kits for choice - Easiest way to match adapters
The QHY294M is available in multiple kits - like it's compatible with the new CFW3 filter wheel and optional OAG - and adapters will provide 55mm backfocus and M48 threads required by many optical systems like the MPCC. No need to calculate anymore!
Dual Gain Auto Switch - HGC/LGC Mode Boosts Low Light Performance
The QHY294 Pro CMOS sensor has a dual gain mode, HGC (high gain) and LGC (low gain). The QHY 294 Pro will switch the two modes automatically. When the gain is set to 1600, you will get the benefits of the ultra low read noise (1e- to 1.6e-) of the HGC mode and a full well capacity of about 14.5ke- at the switch point setting.
-Anti-Dew Technology
The QHY294 Pro benefits from more than a decade of cooled camera design experience. QHYCCD has implemented full dew contraol solution. The optical window has a built-in dew heater and the CMOS chamber is protected from internal humidity condensation.
-Flexible Adapters
The QHY294 Pro has the same body design and mechanical interface as the QHY163. It has a short back focal distance allowing the use of QHYCCD's 0.5mm-27mm spacers (step size 0.5mm) for flexibility in setting up your optical train.
-256MB DDR3 Image Buffer
The QHY294 Pro has an internal 256MByte high speed DDR3 image buffer. This is more than enough for one frame and it significantly reduces any issue of lost frames due to a busy computer CPU or slow USB communication packet errors.
Specifications
| QHY294 PRO COLDMOS CAMERA SPECIFICATION | |
| Model | QHY294M Pro |
| QHY294C Pro | |
| COMS Sensor | SONY IMX492 BSI CMOS |
| SONY IMX294 BSI CMOS | |
| AR Coating On Sensor | Yes |
| Pixel Size | 4.63um*4.63um |
| Effective Pixel Area |
4164*2796 |
| Effective Pixels | 11.6 mega |
| Effective Image Area | 19.28mm*12.95mm |
| Fullwell | 65ke- |
| AD Sample Depth | 14bit (output as 16bit and 8bit) |
| Sensor Size | Typical 4/3inch |
| Full Frame Rate and ROI Frame Rate | 4164*2796 16.5FPS@14BIT |
|
2160lines(eg.4164*2160,4096*2160) 21FPS |
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| 1080lines(eg.4164*2160,1920*2160) 41FPS | |
|
960lines(eg.4164*960,1280*960) 46FPS |
|
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768lines(eg.4164*768,1024*768) 56FPS |
|
|
480lines(eg.4164*480,640*480) 87FPS |
|
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240lines(eg.4164*240,320*240) 156FPS |
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100lines(eg.4164*100,240*100) 290FPS |
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| *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 | 1.6e-1.2e@HGC moe 6.9-5.2e@LGC mode |
| Dark Current | 0.002e/pixel/s@-20C |
| 0.005e/pixel/s@-10C | |
| Exposure Time Range | 60us-3600sec |
| Anti-Glow Control | Yes |
| Shutter Type | Electric Rolling Shutter |
| Computer Interface | USB3.0 |
| Built-in Image Buffer | 256MByte DDR3 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 -30 to -35C below ambient） |
| Anti-Dew Heater | Yes |
| Telescope Interface | M42/0.75 |
| Optic Window Type | AR+AR High Quality Multi-Layer Anti-Reflection Coating (For color camera user need to add a UV/IR filter in the light path) |
| Back Focal Length | 17mm（±0.5） |
| Weight | 650g |
| Reference Price | QHY294M Pro 1294 USD |
| QHY294C Pro 999 USD |
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