Image Formation Lectures Refractive Lenses and Image Formation Objective Lenses and Eyepieces Huygens Wavelets Constructive/Destructive Interference, and Diffraction Point Spread Function Resolution of a Microscope Microscope Imaging and Koehler Illumination Labs How to Focus: The Focal Plane How to Set Up Koehler Illumination Abbe Diffraction Demonstration Measuring a Point Spread Function Tips Eyepieces Features of an Objective Lens How to Clean Objective Lenses and Filters Cleaning a Microscope: How to Find Dirt in Your Optical System Light Sources for Microscopy How to Adjust the Eyepiece and Camera Correcting for Spherical Aberration with a Correction Collar Bonus Lecture Photons: What is Light? Fourier Space: Fourier Transform