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Hi Glen,
I have spent a small fortune buying all the tools, i.e. a Howie glatter plus circular pattern attachment, i also bought a Tak collimating scope. i've also read all the posts and watched all the youtube video's.
But i've found that, all these tools will get you very close but not perfect, hence wanting to use Al's tool as a final star test.
So all i want to know know is that when i'm doing the star test with Al's tool, as i adjusting the primary, the secondary or both.
Just want to understand the process, before i attempt using it.
Cheers,
Rich.
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