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Re: ATM 6" mirror




Michael Coslo wrote:
> 
>         Here are a few things to try:
> 
>         Check the manner in which you mount the primary and secondary
> mirrors. If you use clips, are they binding on either of the mirrors?
> Especially check the secondary, lots of bad mirrors are actually
> poorly mounted secondaries.
> 
>         Try rotating the primary if you can. If the astigmatism
> changes directions when you rotate it, it is the primary, if not,
> look elsewhere.
> 
>         I'd be willing to bet a cup of coffee that your problem is in
> the mounting system, and that is good news, because you can do
> something about it.
> 

There you go.  Trying to get the poor kid hooked on caffine!  I hope you
are right in your analysis.

If not, don't let the lack of pitch and ceo keep you from redoing it. 
I'm sure there are people here that would send you a little.  Is you 6
inch full thickness?  

-- 
Ken Lowther
Youngstown, Ohio
http://www.atmsite.org
ATM FAQ and more
Good starting place for amateur telescope makers