"Clouds in the atmosphere, signals from other stellar bodies, or even simply instabilities in the telescope's systems can all generate noise that interferes with observations," explains Wu. "The moon, for example, reflects solar energy as a strong microwave signal. When making observations, we have to steer clear of the moon to prevent its noise from corrupting our data."
大氣中的雲、宇宙中其他星體的訊號，或只是單純的望遠鏡系統不穩，都有可能帶來雜訊，干擾觀測，吳俊輝舉例說明：「像月亮反射太陽的能量，會發出很強的微波訊號，觀測時就要小心避開月亮的方位，以免這些雜訊不小心跑進望遠鏡內，造成研究誤差。」