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Old 08-12-2017, 01:53 AM
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jr_tech jr_tech is offline
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I may be wrong, but I think that the vertical keystone can be improved by a side to side adjustment of the 45 degree mirror. I would not assume that the 45 degree rails are perfect.

The focus looks fairly uniform, I suspect that moving the CRT foreward or backward will sharpen it quite a bit... perhaps put a dab of lubricant on each of the 3 "fingers" that move the CRT mount so the focus action is smooth.

jr
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