... The pinhole must be smaller than the Airy disk of system being tested. ... Dust on the optics can distort otherwise straight fringes and cause "bullseye ... element, and the test mirror will be seen as a small disk in the field of view ...
... for limit switches on a motion control, as mentioned above. stepper motor pulse arbitrary, although it can to coincide with the a way to eliminate the 1.3.8 2 GB disk space OCAAS system software and all databases require approximately 400 MB of disk space ...