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#6
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It looks like the beam scatters off of the bell and on to the screen.
That is what it looks like exactly..like a reflection off the bell. If it's caused by incorrect phase adjustment it'll be a stretched out image. But it's not always easy to tell if it's that. I believe the black band on the right should be about 1/4" wide if the phase is right. How can I adjust the phase? Sometimes I think the images of the people look a little elongated.. So maybe I should try this adjustment if you can elaborate. And yes the black band is about 1/4" wide..but what do you mean by if the phase is right?
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