Quote:
Originally Posted by DJT
Hi Peter
Do you have a bog standard Cheshire? Are you using tilt plate?
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G'day David.
Yes, and yes.
The tilt plate is great for getting the focuser exactly aligned with the center-spot on the secondary but no use for getting the primary mirror aligned with the secondary. And that's where I'm stuck. When I had a holographic Glatter, I made a screen with a series of concentric circles on it that I slipped over the tube that comes up through the primary. By using the hologram, it was easier for me to see the projected holographic circles and to get them aligned with the primary. Without that, I found it pretty hard to actually see the hologram clearly enough to do that step. But alas, my Glatter is now decorating someone else's cupboard of unused treasures.
And as far as I can see, a plain Cheshire wouldn't be much help either. Perhaps I'm missing something though. I'd be the first to admit what I don't know but it's such a long list, ...
Peter