ZWO ASI533MC Pro 9MP USB 3.0 Cooled Color Astronomy Camera

Entry-level camera for deep space photography
The ASI533 Pro adopts a SONY back-illuminated IMX533 sensor, which is a 1" square frame sensor made suitable for deep sky astrophotography needs. The ASI533 Pro can be regarded as a upgrade of the ASI183 series. Not only does it retains the high-quality features of the ASI183, such as high QE and high frame rate, it also features no amp glow, readout noise as low as 1.0e, pixel size of 3.76 microm and a 2-stage TEC cooling. It is highly recommended for beginners of deep sky astrophotography.

1" square frame
The IMX533 is a 1" square frame CMOS image sensor with approximately 9M effective pixels at a pixel size of 3.76microm. The 14 bit digital output of IMX533 makes it possible to read out signals of 9m effective pixels at a high-speed of 20 frames per second with read noise as low as 1.0e, the performance of which is on a par with those of SCMOS or EMCCD sensors. This sensor is suitable for image needs that require high definition and low noise.

Camera curve
Low read noise, high dynamic range. When the gain value is set to 100, the HCG high gain mode will be turned on. The readout noise will be greatly reduced, and the dynamic range will remain basically unchanged.

Quantum Efficiency
Based on our calculation, the peak quantum efficiency of ASI533MC Pro is greater than 80%.

Zero Amp Glow
Traditional CMOS sensor can generate weak infrared light, which is equivalent to a light source during exposures. The ASI533 Pro uses a no-glow circuitry to ensure best quality images regardless of gain or exposure length.

2 Stage TEC cooling
The 2-stage thermoelectric cooler can cool the CMOS sensor 35 Degree below the ambient temperature (based on a 30 Degree ambient temperature test results), greatly reducing dark current and thereby improving the signal-to-noise ratio even with a long exposure of hundreds of seconds.

Note: External power supplies are needed for all ASI cooled cameras. We recommend you use a 12V@3A-5A DC adapter (D5.5 x2.1mm, center pole positive) or a lithium battery with 11-14V to power the camera. Be aware that using power supply out of this voltage range will probably lead to irreparable damage to the camera.