PrintaRonchi.exe is a small Windows program for drawing Ronchi screens. It is so small (36 kb) that I didn't even bother to zip it. It works only in pixels (dots on a printer). There are no additional files and the program cannot create any files. About all you can do is edit the Ronchi screen and print it. More than likely, it is going to be a very good test of your printer. Of course the aim is to print it on transparency paper, but try it on plain paper first and then look at it with a 1" eyepiece turned in the wrong direction.

Note that the default line widths are 2 black pixels and 4 white pixels. On a 600 dpi printer this will give you 100 lpi.

Tom Stokes - July '09