A larger telescope will always have a higher spectral resolution than a smaller telescope when observing at the same wavelength.

Question

Quizplus · Accepted Answer

Spectral resolution is primarily determined by the instrument (such as the spectrograph) used with the telescope, not the size of the telescope itself. A larger telescope collects more light, improving signal-to-noise ratio but not necessarily increasing spectral resolution.

A Larger Telescope Will Always Have a Higher Spectral Resolution