Instructables

DIY TELESCOPE primary mirror off-axis TESTING reducing optical aberration Daniel's Mirror

video DIY TELESCOPE primary mirror off-axis TESTING reducing optical aberration Daniel's Mirror
http://www.youtube.com/watch?v=FyCLOXF1188
This is the first in a series of tests for developing an optical telescope mirror from a strash can lid. The optical aberration is dramatically reduced with the addition of a shroud creating an f-stop for the mirror at the lens surface. The image was cast off axis on a piece of wafer board.