Telescopes and focal ratio?

Question

if two telescopes have the same aperature, but different focal ratios. say one is f/5 and the other is f/11.
what would the difference be "at the eyepiece"

Answer 1

If you use the same eyepiece in each telescope, it will give you magnification proportional to the focal ratio. So if it gives you 50x in the f/5 scope, it will give you 110x in the f/11. If you use different eyepieces to get the same magnification in each scope, say a 5mm in the f/5 and an 11mm in the f/11, the view will be essentially identical.

The only differences you would notice would be those due to the eyepiece. In simple eyepieces, for example, the eye relief is proportional to the focal length of the eyepiece, so you would have much less in the f/5 scope. If you used a set of more complex eyepieces with all the same eye relief, you wouldn't see any difference between the two telescopes.

Answer 2

The lower the f/ number, the 'faster' a telescope is said to be.
They say 'faster' in relation to astrophotography, meaning that any exposure taken through the telescope will have a shorter exposure time than through a telescope with a larger f/ number.
'Fast' scopes offer a wider field of view than scopes with a higher f/ number.
A scope with a higher f/ number will show a narrower field of view, but magnifications with the same eyepieces will be higher.
An image viewed through an f/11 telescope will be just a hair over twice the size of the same image viewed through the f/5, although it will be dimmer, due to the nature of optics.
'Fast' scopes offer excellent views of extended targets in the sky... Asterisms, dim nebulae, wide, dim galaxies, etc.
'Slow' scope will show higher powered images for detailed obects like planets, where higher magnification is a must.
Did all of that make any sense?