Question

Eyepieces with high magnification typically produce smaller fields of view, and vice versa.

Give an example of a situation where you would use a telescope with a small magnification and wide field of view. Think about both the angular size and level of detail in the object you wish to observe. Consider how those properties would best match with a large/small field of view and low/high magnification

Answer 1

We usually use microscopes for very high magnifications and narrow field of view, because we have to focus on details of a very small part of th 4*pi steradians 3D angle in total
in space as well this is true so it makes sense to have telescopes with high magnification and narrow field of view

but we might need situations where we need a wide field of view in space telemetry
For example : A sensor that detects possible alien life cannot focus on just one small part of space but has to keep focussing on a lar4ge part of space (if possible, all of it ) to detect alien
signals coming in from any part of space

in this case, we have to give up on magnification as haveing wider field of view is more important
hence we have to use a telescope with lowert magnification and wider field of view

A real life example are many radi telescopes all across the world woth low magnifications but really high field of view
they detect things on large parts of space at lower magnification with less detail and then we can use telesciopes with higher magnification and lower field of view to focus at the same part in space to get more details