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W2-JLS, K5-DRC, Dennis and Dallas. How do you mention that? I just came across and stepped ahead in my junk books. Laser collimators, this lens combination, which can collimate very, very well, as in the focus for a laser collimator. As I understand it, it was used one time to create a ham radio laser to-so done by CW. They got 75 miles, as I understand on it, shooting from point A to point B using these contraptions. It was more of an optics thing than it is astronomy, but it would go hand in hand. Thank you, sir, K5-DRC.