ZWO ASI533MM PRO [MONO]

The ZWO ASI 533MM PRO is the long-awaited monochrome version of the incredibly popular ASI533MC Pro cooled camera and features a 9Mp back-illuminated CMOS sensor with 91% quantum efficiency at 460nm.

The ZWO ASI 553MM contains the Sony IMX533 CMOS monochrome sensor which has a diagonal of 15.99mm and a resolution of 9 MPx. The Sony back-illuminated sensor technology improves sensitivity and reduces the noise for the best performance.

The ZWO PRO cameras incorporate a 256MB DDR3 memory buffer that improves data transfer reliability and it minimizes amp-glow caused by slow data transfer speeds.

A higher QE means more of the light is converted into signal. The ASI 533MM has a maximum QE of 91%.

Traditional CMOS sensors emit a weak infrared light and quite often it is seen in the corner of uncalibrated images. This is called "amp glow". The ASI533MM PRO uses a zero amp glow circuitry which eliminates the problem, even when using high gain and a long exposure.

With amp glow – exposure of 300 seconds:

ASI553 frame with no amp glow – exposure of 300 seconds:

Specifications

 

Items included

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