Answer to Question #181578 in Optics for anuj

Question

resolving power of telescope

Answer 1

The reciprocal of the smallest angle subtended at the telescope's objective lens by two point objects that can be distinguished as separate is defined as the resolving power of the telescope.

The formula ; Resolving power$=D/d=a/1.22\lambda$

 $D=$ Is the distance between the objects and the telescope's objective.

$d=$ Is the distance between two slits or points that are adjacent to each other.

$a=$  For just resolution of the two slits or artifacts, is the essential width of the rectangular slit.

$\lambda$ $=$ $589nm$ used light wavelength