[Charries]

An observers unaided eye has a resolving power of 120 seconds of arc. Using a telescope of angular magnification of 24, what would be the agnular separation if the same observer used the telescope?

Simple question, but I get it wrong?

[Stonebridge]

Could you tell us
Your answer
How you got it
The "correct" answer?

[Charries]

Thanks Stonebridge - I've got it now. Just this question is a bit different than the others I've seen ... the subtended by the eye means once seen through a telescope the angle at the objective lens is reduced - I had it the other way around.