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Planetarius
member
Reged: 04/17/08
Posts: 23
Loc: Karlsruhe, Germany
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Re: Startest of Astro Tech AT 111 EDT
05/01/08 05:55 PM
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Excellent John. 
No color fringes in any picture, perfect round, intra- and extrafocal pictures identical.
Looking critical, there is a slight "feature" sometimes between 9 and 10 and sometimes between 3 and 4 oīclock. Unless you mixed up intra- and extrafocal partly, there is no correlation of feature position and i-/e focal position. I donīt know what this could be, but I canīt imagine this works out negatively to the picture quality even a bit, it might not even derive from the objective.
Congrats to your scope and thanks for your help with this 
Volker
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