Thread: CRT question
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[email protected] etpm@whidbey.com is offline
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On Wed, 21 Aug 2019 17:35:58 -0700, Jeff Liebermann
wrote:

On Wed, 21 Aug 2019 16:47:10 -0700, wrote:

So I built a kit that uses an electrostatic deflection CRT for the
display. It all turned out very well except the display is much more
in focus on one side of the screen.


Is there an astigmatism adjustment? That's what's usually used to
tweak display for even focus.

Yeah, there is an astigmatism adjustment. And I adjusted it along with
the focus and brightness to get the sharpest spot. What is weird is
that the display is sharpest on the left hand side of the screen and
then it gets more out of focus on the right. This out of focus is
gradual, with each number being a little more out of focus.
Eric