Editable refracting telescope Though crude looking, this can be edited to create very precise ray diagrams. The rays can be first made very thin to align everything to a fraction of a pixel.
Searching commons
These ray diagrams were selected because they
are editable svg files
should be converted to svg because the usefully explain how to draw ray diagrams
have historical interest
describe refracting telescopes (do reflectors later)
File:Huygens Aerial telescope, 1684.jpg
File:Sidereus, nuncius magna longeqve admirabilia spectacula... Wellcome L0072631.jpg
File:Luneta Keplera.jpg
File:Exit Pupil raytrace.svg
File:TelescopideGalileu.jpg
File:Fernrohr galilei.png
File:Cannocchiale.png
File:Cannocchiale keplero.png
File:Fernrohr galilei.svg (note the lack of precision)