ASI6200MM Pro uses Sony’s latest
back-illuminated IMX455 Full Frame format native 16-bit ADC sensor. It
has3.76µm, ultra-low 1.2e readout noise and an innovative breakthrough
resulting in zero amp-glow.
Amazing Craftsmanship, Lightweight body, Solid image quality
have been working hard to reduce the weight of the camera while
improving the performance of the camera. After years of technical
accumulation and repeated weight loss experiments by ZWO engineers, ZWO
finally concentrated the ASI6200 to 0.7KG
Full Frame format
ASI6200MM Pro uses full frame format, the sensor length and width are
36mm * 24mm and the diagonal is 43.3mm. This is a 62MP camera with a
small pixel size of 3.76um that can accommodate a large well depth of
Native 16bit ADC
Pro is our first batch of CMOS astronomy cameras with 16bit ADC. This
16bit ADC is not a CCD 16bit ADC, and it can really achieve a dynamic
range output of 14 stops. This significantly improves the image
sharpness and contrast, and the color changes are smoother and more
IMX455 backlit sensor
back-illuminated CMOS image sensor improves sensitivity and noise
reduction – the key factors to enhancing image quality, while radically
realigning their fundamental pixel structure from front-illumination to
back-illumination. It has retained the advantages of CMOS image sensors
such as low power consumption and high-speed operation.
conventional front-illumination structure, the metal wiring and
transistors on the surface of the silicon substrate that form the
sensor’s light-sensitive area (photo-diode) impede photon gathering
carried out by the on-chip lens. A back-illuminated structure minimizes
the degradation of sensitivity to optical angle response, while also
increasing the amount of light that enters each pixel due to the lack of
obstacles such as metal wiring and transistors that have been moved to
the reverse of the silicon substrate.
Sony has newly developed a
unique photo-diode structure and on-chip lens optimized for
back-illuminated structures, that achieves a higher sensitivity and a
lower random noise without light by reducing noise, dark current and
defect pixels compared to the conventional front-illuminated structure.
ASI6200MM Pro has excellent performance with a dynamic range of up to
14stops. When the gain value is 100, the magical HCG high gain mode is
turned on, the readout noise is greatly reduced, and the dynamic range
is basically unchanged. It is recommended to set the gain to 0 or gain
100 in deep space.
Zero Amp Glow
CMOS sensors produce a weak infrared light source during operation
quite often seen in the corner of uncalibrated images as the tell tale
signs of ‘amp glow’. As the ASI6200MM Pro uses zero amp glow circuitry,
you won’t have to worry about amp glow even when using high gain, long
ASI6200MM Pro comes with the polyimide heater that can avoid any dew problems. The anti-dew heater which completely fit the protective window will heat it to avoid any dew problems. The heat anti-dew heater power is around 5W and can be turn off in software to save power.
We suppose that the QE peak value of the ASI6200MM Pro is above 80%.
Two-stage TEC cooling, ultra-low dark current
Pro uses two stage TEC cooling that can lower the CMOS sensor
temperature to more that 35c below ambient, which can greatly reduce
dark current generation and sensor noise even with extended exposure
The unique dark current suppression technology can even further reduce dark current noise.
a cooling temperature of 0 °, the dark current noise is only
0.003e/s/pix. Which means 300s exposure can only cause 0.9e dark current
noise, which is completely negligible!
USB3.0 & 256M DDR3 Memory
ASI6200MM Pro is equipped with a USB 3.0 transmission interface and a
built-in 256MB DDR3 cache to ensure stable and secure data transmission.
Under long exposure, it effectively avoids frame dropping and greatly
reduces the glow effect caused by slow reading speed.