Quote:
Originally Posted by Startrek
Simple Answer
Larger aperture means more light gathering ability (more photons ) which means more ability to resolve dimmer objects
You can’t expect a 4” scope to resolve a magnitude 11 galaxy ( very dim ) to the same level of detail and contrast that a 10” scope can do
Recommend you buy some astronomy and astrophotography books which will help explain the above in more detail
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Thanks for replying everyone. I see people saying that big telescopes collect more photons, and although this is true, it's the f ratio that the sensor really 'cares' about. In my example, both setups have the same f ratio and hence the same photon flux per unit sensor area. Doesn't that make the 'bigger light bucket' argument invalid? Now I'm really confused!