Afocal photography  From Wikipedia, the free encyclopedia Jump
to: navigation, search An afocal setup with a digital camera and
a finderscope with optical diagram: 1 - Telescope 2 - Camera 3 -
Film or CCD plane L1 - Telescope objective L2 - Eyepiece L3 -
Camera lens  Afocal photography, also called afocal imaging or
afocal projection is a method of photography where the camera
with its lens attached is mounted over the eyepiece of another
image forming system such as an optical telescope or optical
microscope, with the camera lens taking the place of the human
eye.[1]   Afocal photography works with any system that can
produce a virtual image of parallel light, for example
telescopes and microscopes. Afocal photographic setups work
because the imaging device’s eyepiece produces collimated light
and with the camera's lens focused at infinity, creating an
afocal system with no net convergence or divergence in the light
path between the two devices.[2] In this system the device is
focused on the object and the c