Limits on Resolution: Telescope
need to resolve an “x” size of about 1 cm
“s” is on order of 100 miles or 150 km
??limit then must be (in radians)
= 1 cm / 150 km = 7 x 10-8
?limit = 1.22 x 5.5 x 10-7 m / D = 7 x 10-8
so D = 10 m (Hubble has a 2.4 m diameter)