From: "Jack Schmidling" 
To: 
Reply-To: "Jack Schmidling" 


From: "Bob May" 

> If all of the stars without the corrector end up showing a comatic tail,
> then you are not properly collimated.....

But that is not the case.  The stars just below right center of the core
have round annulae and when focused have no coma.  As far as I know that is
the optical center for this particular image and collimation tweek and the
basis for this entire discussion.

This may be hard to see because I rescaled the image but it is very obvious
in the full size pic.

js

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