…continuedFour Infamous Telescope Myths
"Large telescopes are more impaired by light pollution than small ones."
This claim has no basis whatsoever in truth, but it's pretty easy to see how it arose. The "logic" behind this myth is that since large telescopes gather more light than small ones, they must also collect more unwanted light (light pollution). This is true, but the real issue is image contrast. The brightness ratio between a galaxy like M31 (say) and the background sky is the same regardless of telescope size. All telescopes are equally impaired by light pollution compared to what they would show under a dark sky. A large telescope's advantages superior light grasp and resolution are the same under bright skies and dark ones.