ASI220MM Mini (Mono)This guide camera has nearly double the sensor area of the ASI120MM Mini. 1 1. 8" SC2210 sensor (7. 68 mm x 4. 32 mm). 4m pixels in a 1920 x 1080 array with low read noise. 12 bit ADC and the QE peak is above 90%. Overview The ASI 220MM Mini makes it easier to acquire guide stars, compared to the ASI 120MM, because of the 220MM's larger image sensor, high sensitivity and low read noise. Like other cameras in ZWO's lineup of "Mini" models, it has a