Re: ATM Laser Artifical Star

["Arjan te Marvelde (ELN)" <Arjan.te.Marvelde@eln.ericsson.se>]

> Since some of us-- even large organizations like NASA and Perkin-Elmer--
> are not affluent enough to have a 150 foot optical testing tunnel, you may
> now better understand why the null test was invented and appreciate its
> contribution to our art!
>
> . . . Richard

I believe the original posting was about using a laser and a lens. With the lens you can convert the spherical wavefront exiting from the laser into a parallel one, thus imitating an artificial star at infinity. There would be no need for a 150 foot tunnel, somewhere in the order of the FL would suffice.

Did i miss something?

 ... Arjan te Marvelde