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Description du produit
ZWO's SWIR cameras use Sony's InGaAs sensors, featuring a wide band from 0.4μm to 1.7μm. The cameras have a large full well capacity, and high sensitivity with an incredible QE peak value of 80% at 1200nm.
The great performance in capturing short wave infrared lights makes them applicable for SWIR imaging, photometric measurement, optical communication, laser & optical laboratory and more fields.
Penetrate Through the Cloud & Fog and Capture Stars in the Daytime
The wide band (400-1700nm) gets the camera's sensitivity into a higher level, making it capable of capturing beautiful night skies with thin clouds, and also alllowing you photograph stars even during daytime.
Key Features
No Amp Glow – Worry-Free Imaging even with Long Exposures and High Gain
Traditional CMOS sensors produce a weak infrared light source during operation, which is quite often seen in the corner of uncalibrated images. This is the tell-tale signs of "amp glow". As the ZWO SWIR cameras use zero amp glow circuitry, you won't have to worry about amp glow even when using high gain, long exposure imaging.
Two-Stage TEC Cooling
The TEC cooling system can precisely control the temperature of the sensor, and lower it to 35-40 degrees celsius below ambient temperature. It is recommended to use the camera at low temperature for best imaging performance.
Camera Performance
Readout noise is generated in the amplifier on the chip that converts the stored charge of each photodiode (i.e. pixel) into an analog voltage to be quantified by A/D conversion.
The lower the readout noise is, the better the image SNR we'll get. Compared to traditional CCD SWIR cameras, ZWOs cameras keep their readout noise at a really Iow level.
QE Curve (Relative)
QE Curve (Absolute)
Qu'y a-t-il dans la boite
Specifications
| Model | ASI990MM-P | ASI992MM-P |
| Sensor | SONY IMX990 | SONY IMX992 |
| Diagonal | 8.2mm | 11.4mm |
| Image Area | 6.4*5.12mm | 8.942*7.093mm |
| Resolution | 1.31 Mega Pixel (1280*1024) | 5.33 Mega Pixel (2592*2056) |
| Pixel Size | 5.0μm | 3.45μm |
| Frame Rate | 31.9 FPS | 70 FPS |
| Shutter | Global Shutter | Global Shutter |
| Exposure Range | 32μs-2000s | 32μs-2000s |
| Read Noise | 21e | 71e |
| QE Peak | 80% | 80% |
| Full Well | 127Ke | 62.8Ke |
| ADC | 12bit | 12bit |
| DDR3 Buffer | 256MB | 256MB |
| Interface | USB 3.0/USB 2.0 | USB 3.0/USB 2.0 |
| Adaptor | M42X0.75 | M42X0.75 |
| Dimensions | 78mm Diameter 73.5mm Tall |
78mm Diameter 73.5mm Tall |
| Cooling | Regulated Two-Stage TEC | Regulated Two-Stage TEC |
| Delta T | 35-40°C below ambient | 35-40°C below ambient |
| Working Temperature | -5°C—45°C | -5°C—45°C |
| Storage Temperature | -20°C—60°C | -20°C—60°C |
| Working Relative Humidity | 0%—80% | 0%—80% |
| Storage Relative Humidity | 0%—95% | 0%—95% |
Dimensions
Connection Solutions
Articles, vidéos et liens supplémentaires
External Links
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