The two stars are 5.1 x 1011 m apart and are uniformly distant from the earth. A telescope consists of an objective lens having a diameter of 1.57 m and just detects these stars as separate objects. Suppose that light of wavelength 510 nm is being observed. As well, suppose that diffraction effects, instead of atmospheric turbulence, limit the resolving power of the telescope. Determine the maximum distance which these stars could be from the earth.