The ZWO ASI220MM Mini Monochrome Guide Camera uses the Sony 1/1.8" SC2210 sensor, giving it an edge in near-infrared sensitivity compared to similar guide cameras. It is essentially a boost from the ASI290MM Mini since it has a larger sensor format, pixel size, and near IR performance.

• A step up from the ASI290MM Mini with better performance
• The ZWO ASI220MM Mini reaps the benefits of the Sony SC2210 sensor, designed for near IR sensitivity for guiding purposes
• Low readout noise of 0.6e for cleaner exposures
• Measurements of 92% QE at 500nm peak render outstanding results
• Computer interface of USB 2.0

Here are some comparisons in specs between the ZWO ASI220MM Mini and ASI290MM Mini.

The user can simply connect the camera directly to the mount with the ST-4 port. The USB-C 2.0 port also provides better connection than a standard USB port.

One of the benefits of the ZWO Mini series is how well they integrate with the Off-Axis Guider (OAG). It provides enough flexibility inward or outward from the prism to ensure proper back focus distance between the sensor and prism.