CCD versus CMOS: Which is Better?

The Charge Coupled Device (known as a CCD) has dominated astronomy and consumer electronics for almost 50 years. Meanwhile, the Complementary Metal Oxide Semiconductor Active Pixel Sensor (CMOS APS, also known as CMOS) is quickly gaining ground, evolving to the point where it is beginning to replace CCD in practically all but the most specialized applications.

With technology changing at a rapid pace, how do you know which sensor is best for your needs?

This guide provides an introduction to CCD and CMOS sensors, including:

• A brief historical look at each sensor’s evolution
• An overview of how each sensor works—including readout
• Side-by-side comparison of key advantages and functionality of CCD vs. CMOS sensors