Question: Consider a telescope with a small circular aperture of diameter 2.0 centimeters.
A) If two point sources of light are being imaged by this telescope, what is the maximum wavelength lambda at which the two can be resolved if their angular separation is 3.0 x 10^-5 radians? Lambda = 490 nm.
B) In this applet, change the settings to match the situation in Part A. Notice how the diffraction pattern looks when the two sources are at the resolution limit (i.e., just resolved). Now change the wavelength to 650 nanometers and the aperture diameter to 1.5 centimeters. Use the applet to roughly determine at what angular separation the two points are just resolved.