Final answer:
The statement is true; more detection channels lead to better spectral resolution. This is because modern detectors can capture light over longer periods, and technologies like adaptive optics can correct for atmospheric disturbances, allowing for more precise observation and analysis of celestial objects.
Step-by-step explanation:
The question 'More detection channels usually means better spectral resolution' is true. Improved spectral resolution is fundamental in fields like astronomy, where detecting minute differences in wavelength can significantly impact our understanding of celestial objects. Modern detectors have advanced to the point where they can collect light energy over extended periods, referred to as "taking a long exposure", which is crucial for observing faint objects in the cosmos. Moreover, technological enhancements in detectors and methods, such as adaptive optics, have greatly increased the capacity to capture finer details by correcting for atmospheric turbulence. Additionally, utilizing a diffraction grating for spectral analysis provides the advantage of being able to differentiate between wavelengths more precisely compared to a prism. Detector technology improvements are vital for better resolution, enabling a detailed analysis of astronomical phenomena.