Re: [APML] A question about collimating

[Gene Horr <genehorr@texas.net>]

"m.dyer" wrote:

> Will placing this sticker on the primary mirror cause a drop performance???
> For normal viewing? - for photography?

Not at all.

> Is marking the mirror "key"  in finding center or is the "eyeball" method
> sufficient ???:)

It is extremely critical.  To complicate things further is that unless this
was a high end product it is unlikely that the focal center of the mirror
is the exact same point as the geometric center....although it is good enough
for rough collimation.

I have yet to see a laser product that will give you _perfect_ collimation.
It may suffice for low-moderate power visual or CCD work, but 35mm will
show the errors.

Gene Horr
genehorr@texas.net

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