tested BG-WAF

Downloaded Bahtinov Grabber 17.0, a version specifically for those not using autofocus. This avoids ASCOM issues. Made a PowerPoint presentation with 3 diffraction pattern images of a star, out of focus, too far the other way, and then perfect. Made sure the images were in the exact same alignment. Fired up BG, set the area of the screen to scan. Turned on the sound option. Then paged through the slides. Amazingly, it worked. The software showed the diffraction line overlays, the direction to change focus, that I went too far, and finally that I had perfect focus. Brilliant. This should work dandy with the EOS Utility and the new Y-Mask.