ASI2600MC Pro uses Sony’s latest back-illuminated IMX571 APS-C format
native 16-bit ADC sensor. It has an ultra-high 14 stops dynamic range,
ultra-low 1.0e readout noise and an innovative breakthrough resulting in
zero amp-glow, Backfocus 17.5mm
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 ASI2600 to 0.7KG.
ASI2600MC Pro uses APS-C format, the sensor length and width are 23.5mm
* 15.7mm and the diagonal is 28.3mm. This is a 26MP camera with a small
pixel size of 3.76um that can accommodate a large well depth of 50ke.
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
IMX571 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.
ASI2600MC 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 ASI2600MC Pro uses zero amp glow circuitry,
you won’t have to worry about amp glow even when using high gain, long
ASI2600MC Pro comes with the polyimide heater. 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 ASI2600MC Pro is above 80%.
Two-stage TEC cooling, ultra-low dark current:
the ASI6200, the ASI2600MC Pro also uses two stage TEC cooling and 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 times.
The unique dark current suppression technology can even further reduce dark current noise.
a cooling temperature of 0 °, the dark current noise is only
0.0024e/s/pix. Which means 300s exposure can only cause 0.7e dark
current noise, which is completely negligible!
DDR3 Memory Buffer
ASI2600MC 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.