With the continued improvements we're seeing with CMOS sensors for astrophotography, we were excited to take a look at QHY's recent offering, the 533C active-cooled colour camera. The QHY533 comes with either a mono (533M) sensor or with the one we are testing, the 15.97mm Sony IMX533 colour (533C) sensor. These latest Sony sensors offer superb sensitivity and low noise while also eliminating all amp glow, a common issue for CMOS cameras.
QHYCCD pitches the 533 series as beginner or entry-level cameras, and with a 1-inch square sensor this is one of the smaller-chip CMOS cameras it produces for deep-sky imaging. At 9MP, the 533 may seem small compared to some of its competitors on the market, but
